Bruce,Thank you so much as I was about to give up! Everyone I thank you for the assistance. This is board is one valuable resource with many experts!

I am trying to complete a mileage reimbursement form. I think I have a good design (?) but I am missing a critical efficiency within the form. I want the form to be able to calculate the cost centers across the expandable table within the subform. I have a dropdown that has different cost centers. H...