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Operational Simulation · Typical day under a Surge event

Same customer flow on both sides — only the operational decisions change (checkouts + replenishment)

WORST CASE

Lean Ops · Surge Event · Fragile Replenishment

08:00

RESILIENT CASE

Peak Flex · Surge Event · Resilient Replenishment

08:00

Quick Trip Regular Basket Large Weekly Shop
Traditional Express Self Checkout Closed checkout Being served
Basket reduced by stockout ! Manager approval (blocks the checkout) 14h (08:00–22:00) compressed into ~90s at default speed · Demand calibrated on 21-day mean × 1.20 (surge) · Fixed seed: identical result on every reset