Timestamp dependent on another field
For billing notices, I'd like to create a series of checkboxes representing how and when I've contacted a customer regarding an outstanding bill.
I'd like 4-5 fields with a value list that reads email, phone, collections, etc... and a field next to it with a timestamp that says when I first edited the field .
Is this possible? If not, i can just add date fields for each desired timestamp field, I just thought this would save me a step when I was sending bills.