restricting data entry
I am trying to restrict data entry into a field called "Date SPECCD," if another field called "Concept Approved Date" is empty (They are both part of a table called "Approval_Master 2").
I'm pretty sure that I have to set-up a calculation in the "Validated by Calculation" option, but I'm having trouble building it. I'd appreciate any help I can get! Sorry for the newb question.
Thank you :)