Question re. creating date field and using it for notifications

Archer GRC TPRM Module, Engagement application. I have a need to add a date and completed by fields for all of our separate residual risk assessments, to capture the date completed and who completed it. How I intend to use this is, once created, I want a workflow and notification setup (which is the second step and not what I'm concerned with now) so that if the date field and/or completed by fields are empty, the person assigned as the assessor and myself will get a notification for overdue. 

First I need to know if I need to create separate date/completed by fields for each risk domain on the Engagement page. 

Originally posted on November 30, 2022 in the Archer Community.