Expiration Dates

I was not sure if this got to mailing list or not. I have done some research and could not find where you can enter start and stop dates through freeradius. Is there a way that I can input the start and stop time for user as far as in like an expiration date? Let say you are a contractor and need access for the 5 duty days you are in town. Can I put a config in that says, start on the 1st, end on the 5th? Thanks for all you inputs. Truly helpful. Dwane