COSD, if I remember is 'Customer Occasion Service Daily'. It's each customer order processed over 30 minute segments. It's basically a conversion metric. It's kinda confusing, so I'll do my best to explain it below.

Example: if we have 30 customers each buying a coffee in a segment that looks great. We have 30 COSD's and 30 items walking out the door. Well some stores aren't getting those ideal 30 per segment, because it's 2-6 items per order. We can have 4 customers each order 5-6 items B2B, and that only counts as 4 COSD's. There's still 30ish items walking out the door, but there is no discrepancy for production times, sales accrued or labor cost allotment for either type of order. The computer just converts each sale as 1 COSD. It reconciles at the end of the day, because we're punching in the orders, but the discrepancy lies in how the COSD's are weighted.

This becomes a challenge because we're 'ideally staffed' based on how our COSD's are broken down by segments throughout the day. This affects everything from budgets to hours scheduled. If COSD's are down we can't hire more help or extend the help we do have. Some stores are meeting this demand others are failing hard.