What is the best way to optimize schema for capturing attendance data

Question

We have a sports training camp which is regularly attended by various teams in the city. We have a session per day spanning 2 hrs(9-11 AM) and the time slots could vary for

Answer 1

AttMst
  id | date

AttDet
  attdetid | id | userid

In this way you need to store day in AttMst and the present users on that day will be stored in AttDet.