I have a query that calculates inventory levels at future dates for rental equipment. I have a parameter for a start and end date so it can search for orders between those two dates and I have been trying to make it so that the end user cannot just click through and have no dates entered for the parameter but haven't had much luck. Is their a way to do this? So far the only solution I've found is to put the date selection on a form and set the validation rules this way but I prefer the pop up if its possible.