Picture the first session at a Chicago trade show letting out while Elena, the pickup lead, is still checking the cartons behind the counter. She expects 21 people in the next 15 minutes, with four already waiting. She has three active counters, and a timed rehearsal put a straightforward pickup at two and a half minutes. A colleague offers to pull one of the three attendants aside to handle missing confirmations. Elena can accept the offer, ask for another authorized person, or release the next group in smaller waves. Her choice will determine how much unfinished work the next shift inherits and whether people gather in the cross aisle.
To plan a merchandise pickup counter, estimate how many complete pickups each staffed position can handle during a specific window. Compare that number with new arrivals and the people already waiting, then apply the stock limit. Give exception work its own capacity and authority. The same numbers that look manageable across an entire afternoon can leave a substantial queue at a single session break. A short series of windows shows where to change the release pattern, staffing, or stock handoff before people arrive.
Download the Excel pickup capacity calculator
Workbook v1.1, updated November 9, 2026. Enter service, recheck and window times to one decimal minute. If a case moves from the ordinary queue to the exception desk, record the confirmed transfer in the ordinary queue and count it once as a new exception at the receiving desk.
Count finished pickups at each station
A counter only contributes capacity while its attendant can perform the full job. That usually includes checking entitlement, locating the right item, handing it over and recording the issue. If one attendant can scan a badge but must wait for another person to release the box, measure the combined process. If the scanner and stock runner serve all counters, consider whether either can become the limiting step. Adding a staffed position may do little while the same stock runner still has to open every carton.
Start with the actual working minutes in a window. Divide those minutes by the measured minutes per ordinary pickup and round down for each identical independent counter. Multiply by the number of active counters. For 15 minutes, three counters and 2.5 minutes per pickup, each counter can complete six whole pickups, giving 18. If a 15-minute window instead takes four minutes per pickup, each counter finishes three. Three independent counters therefore finish nine, even though pooling all 45 counter-minutes and rounding down would give 11. The per-counter model assumes unfinished work does not transfer between attendants or count as completed by the cutoff. Model a pooled workflow separately if your stations truly share and finish tasks that way.
MIT OpenCourseWare's operations capacity lecture offers background on measuring process capacity. Its queuing lecture is a separate reference for why arrival and service patterns matter. The calculations here plan finished work in short windows. Actual waiting depends on the pattern inside each window, whether the queue starts with people in it and whether service times vary. Even a window that clears by its end can have a line for most of that period.
Take a few rehearsal measurements using the real station setup. Have one person scan and issue an ordinary pickup, another handle a typical lookup problem, and a runner restock a low bin. Start the clock when the attendant begins serving a person and stop it after the issue is recorded and the station is ready again. If a popular size sits in a distant carton, run a second check after the front bin empties. Retain the range and choose a working estimate you can explain. A faster rehearsal with the simplest cases can be useful for comparison, but staffing the live counter on that rate alone leaves no room for the items people actually ask for.
Record demand, work and stock separately
Demand in a window is the ordinary arrivals you expect plus the ordinary pickups carried from the previous window. Known exception cases go in a separate count. Someone with a missing approval who has already been routed to that queue should appear once, even if they also walked through the ordinary line. Count any extra handling that stays at the ordinary station as time or an explicit rework allowance. Moving a case across the floor changes which lane owns it. It does not create a second attendee or a second unit of demand.
| Measure | What to enter or calculate | Who can verify it |
|---|---|---|
| Window and active counters | Use minutes each station can work and the number staffed for the whole interval | Counter lead or shift supervisor |
| Ordinary demand | Add new eligible arrivals and ordinary carryover at the start | Check-in lead and outgoing shift |
| Ordinary service slots | Round down working minutes divided by minutes per pickup, then multiply by active counters | Staffing lead and rehearsal observer |
| Units available to issue | Count verified stock after any reserved buffer or unavailable units | Inventory custodian |
| Ordinary units issued | Use the lowest of ordinary demand, service slots and available stock, assuming one unit per pickup | Station lead and inventory custodian |
| Ordinary closing backlog | Subtract ordinary issues from ordinary demand, then carry the remaining people to the next window | Incoming shift lead |
| Exception backlog | Track separately. Subtract only cases that are resolved or formally transferred | Authorized exception desk lead |
The one-unit assumption matters. A pickup that includes a tote and a jacket can still be one kit if the two items are packed and issued together. If the attendee can choose multiple pieces independently, plan service in people or transactions and track merchandise units by item in a separate inventory ledger. Mixing people and loose units can make an apparently well-stocked station run out of the only size that an attendee is authorized to receive. A kit may also be held for quality review or reserved for a later group. Check the number of complete, releasable units before entering stock in the window.
If a case needs rework at an ordinary counter, keep the counting rule explicit. For example, set aside three minutes at each counter for quick checks that do not require a separate decision. With 15 minutes scheduled and three minutes reserved, each counter has 12 minutes for regular service. At 2.5 minutes per pickup it can finish four, giving 12 across three stations. The same three minutes shared by the entire lane would be a different assumption. If the rework is routed to another staffed desk, enter its demand and service there instead of also reserving time for the same work in the ordinary lane.
Worked decision one: protect the regular counter and shape the next wave
Return to Elena's first session. Start with 21 expected ordinary arrivals and four already waiting. There are 25 ordinary pickups to serve. With three counters and the measured 2.5-minute rate, the planned service capacity is 18. Assume 30 complete kits are available and the ordinary work fits the measured process. The lowest of 25, 18 and 30 is 18, so seven carry over. This is the expected workload at the window boundary if the inputs hold. It does not tell Elena how long the seventh person waits.
Taking an attendant out of ordinary service leaves two counters. With the same rates, they can finish 12. If the demand stays 25, the ordinary carryover increases to 13. Elena needs a reason to accept six fewer ordinary slots. The exception desk should have someone who can make or obtain a decision, and its workload should justify that trade. If the person can only make a note for later, the event should measure the desk as intake and escalation. It cannot count an issue just because the attendee left the first line.
Suppose the event supervisor can supply a fourth operator with access to the approved eligibility record. Elena keeps her three regular counters. The separate operator can review three cases in 15 minutes at a measured five minutes per case. Four exception arrivals are expected, distinct from the 25 ordinary pickups. The desk can work on three, leaving one awaiting review if the three are closed. A closed case may be approved for issue, declined or assigned for a later appointment. If a case is approved and gets a kit, record that issue once and reduce stock. The desk's three reviews never become three merchandise issues by default. For this plan, reserve enough stock for ordinary commitments before allowing an exception issue from the same pool.
Elena chooses the fourth operator, with authority confirmed by the event supervisor. She also calls the stage manager and arranges for the next group of 11 ordinary pickups to receive staggered instructions rather than coming straight out of a second session. The following 15-minute window now has seven carried pickups and 11 new ones, for 18. With three counters and the same service rate, there are 18 slots. The stock custodian must still verify enough units to supply all 18. If two exceptions received kits and the first window started with 30, there are 10 left after 18 ordinary and two exception issues. At least eight verified kits are needed before the second window can issue all 18. A runner checks the replenishment at the station before Elena promises it.
The first line can start on time without borrowing an ordinary attendant. The outgoing lead gives the next shift seven ordinary carryovers, the open exception's case number, the stock count and the arrival instruction agreed with the stage manager. The team can see which next action belongs to which person. If the fourth operator does not arrive, Elena keeps the regular positions open and assigns a supervised holding and callback process for exceptions that can wait. Attendees get a time and a contact rather than an unauthorized promise at the counter.
Worked decision two: model a break and a stock cap
At a separate sponsor pickup later in the day, the working window is 20 minutes. The organizer scheduled two counters, but one closes for a meal break throughout this window. A standard pickup takes three minutes, measured with the actual badge and stock lookup. One counter finishes six whole pickups. With 12 new attendees, three carried from the previous window and 10 available kits, planned issues are six and closing backlog is nine. The break stays on the schedule. Operations can choose to provide relief coverage or to change the flow of new attendees.
If a trained relief operator opens the second counter for the whole window, total service slots are 12, but only 10 kits are available. The team can issue at most 10 and five still carry over. The change buys four more issues in this window, not the six nominal slots. If the missing sizes arrive before the window and the full assortment is counted, issuing 12 would leave three. If cartons arrive during the window, start a new planning segment at the actual replenishment point or keep the conservative stock limit for that window. Entering a later shipment as opening inventory hides the moment the line stalls.
The sponsor's floor manager chooses to keep the break, open relief coverage only when the custodian confirms stock, and offer a later pickup appointment to five people who do not need the item right away. The incoming lead should document who accepted an appointment and move those people out of the current waiting line only when the alternative is confirmed. Without that confirmation they remain part of demand. Give the operations owner the opening backlog, new confirmed arrivals, completed issues, booked transfers, remaining ordinary workload and exception work. A separate transfer count prevents a smaller line from being mistaken for more merchandise issued.
Respond when the inputs change at the counter
If no regular counter is staffed, capacity is zero. A valid window with eight ordinary arrivals and two waiting carries 10 forward when there are no issues or confirmed transfers. With a missing staffing value, the forecast is unknown. The shift lead should confirm coverage or record a deliberate zero. A blank service-time cell is also missing information, and a zero or negative service time is invalid. Both require a new measurement or a defensible assumption before predicting issues. A displayed zero should mean someone knows the counter cannot work, not that a spreadsheet ignored a missing input.
For a burst that exceeds the holding area, do not use the planned closing backlog as a substitute for a floor check. A room may fill immediately when the session ends even when the last person can be served by the cutoff. Ask the venue or floor manager what space is approved for waiting and how to keep routes clear. If the line reaches the agreed trigger, direct a later wave to an approved waiting area or an alternate appointment. Keep access to the counter for anyone who needs another way to collect. The shift lead should know who can approve a routing change and who can update the stage or registration message.
A missing pickup entitlement belongs with an authorized decision-maker. Give the person a case number and the next contact or expected update. If the case moves back to ordinary pickup, close or transfer its exception record and add it to the ordinary queue once. If an exception operator issues a kit directly, update the inventory ledger and entitlement record there. When several people claim the same reservation, hold the issue while the lead checks the permitted recipient. Do not treat a scan as proof of handover or issue replacement stock without reconciling what the counter already gave out.
Inventory discrepancies require their own check. If the model shows four units left but the table has three, pause issues for the affected item and ask the custodian to reconcile completed handovers, damaged units and units reserved elsewhere. Update the counted stock and revise the next wave if needed. A table that counts a wrong-sized or damaged item as available is too optimistic, even if the total carton count is correct. Keep a separate mark for stock still being investigated so the next shift cannot use it by mistake.
Put the model into a repeatable shift routine
Use rows for successive windows. Enter new arrivals, the verified opening queue, minutes available, staffed positions, service time, and available stock. Enter known exception workload separately, and give the exception desk a measured rate and an authorized operator. The first window can start with a confirmed backlog. Later windows should read the previous closing value during planning. Once a window is over, the incoming lead can replace a forecast with the observed count through a named actual input or a new plan version. Record why an observed count differs. Someone who left, transferred or was rescheduled changes the line count even if they received nothing.
Run the baseline before comparing a change. Then alter one input at a time. Compare opening another position, splitting a release wave, reducing search time by staging complete kits, and moving authorized problem resolution to a separate desk. Use the result to decide what must happen before the next session ends. A fixed staff schedule is useful only if someone confirms that each person is trained, actually present, and able to access the required system. A forecast with two open positions is the wrong plan if one person is also the only runner for all stock.
Use a backlog threshold as an operating trigger, not as a cap on the number you report. If the approved threshold is six and the model gives seven, show seven and flag it. If demand surges to 500 with no staffed counters, the model should carry 500 rather than hiding overflow. A trigger can prompt the floor owner to hold a release, ask for a queue marshal or post revised pickup instructions. The actual intervention depends on venue conditions. It should have a named owner, a time to recheck and a clear way to tell attendees where to go.
At handoff, compare the physical queue count with the calculation and the stock ledger. The outgoing lead can say, “Seven ordinary pickups are waiting, one exception remains with the desk lead, and there are ten complete kits on the table. The runner owes eight more before the next wave.” The incoming lead repeats the conditions that must be met before another group is sent. The stage manager gets the revised arrival message, and the desk lead retains the information they need to handle the one unresolved case. This works on paper during a connection failure if the team knows how to reconcile the records later.
The staging work is one area an event merchandise partner can support. Giftpack's event merchandise and conference kit offering covers merchandise and conference kits, with project scope and delivery arrangements confirmed for the event. If pre-packed, clearly identified kits suit the job, ask how they will be grouped and handed over before modeling a faster service time. Then rehearse the actual handoff with your team. Elena's counter plan still depends on the people who can issue the kits, the stock they can verify and the next group the stage manager sends.