Watch the pattern, not the anecdote
One chaotic Saturday does not mean every afternoon needs double coverage. Look at a few weeks of peak windows before changing the schedule.
Match skills to the rush
Put your fastest checkout person on the busiest block. Use quieter hours for receiving, counts, and training.
Use reports as a conversation starter
Daily and peak-hour views in tools like ShopLift reports help teams discuss coverage with shared numbers — not blame.