General :: Automatically Delete Data That Meets Criteria?

I'm an amateur (is there such a thing as having databases as a hobby?) with little training. I volunteered to organize a growing volunteer group I'm a part of by making a simple database for the volunteer office staff. One of the things I want it to do is make name tags for our weekly meetings. I don't want to print one for each name on our list because the list is over 400 names long with only around 35 regular attendees. I made two tables--one is the MakeNameTag table that lists regular attendees (it is a lookup field on the Names table).

The other is the Absences table. It has two fields; DateOfAbsence and MakeNameTag. If someone misses a meeting (does not pick up their name tag), their name is added to the Absences table. A query then filters the table for dates in the last 28 days. If their names shows up four times in the last 28 days I want for their name to be deleted from the MakeNameTag table. How to do that automatically? Our office volunteers have minimal PC skills, so the solution needs to be very user-friendly.