I'm sure this is possible... I think I am just going about it wrong. Here is what I am struggling with;

I am creating a report that allows my managers to "balance" my cashiers out at the end of the day.

I want the managers to enter a parameter value, which is the physical count of the cash drawer - for each employee - that did sales on that day.

In other words if an employee did NOT do sales that day then the parameter would NOT display in the list.