Here is my sheet that I need help with, https://docs.google.com/spreadsheets/d/1TSu3470Pm64jtKTQDupLVx-cIj--WdYCNtFD-Ye409M/edit?usp=sharing, it's editable if you would like to mess around with it.
I am trying to make it where when you click on any dropdown and select the driver that needs to be covered and it automatically adds their route time for that specific day and time of day from the "Route Times" sheet so the sub driver can have their schedules for the week. I just don't know what the formula would be in the pre and post cells.