Create event with:
Athletic Event Type= Game, Game/MultiOpponent, Tournament

Info about the event: Home/Away, location, contact person, etc.

Description should fill in automatically if you enter opponent and home/away
Team = team that is competing

Class Departure Time = time students should be leaving class

Class Attendance Status = Absent-Excused-Carmel

Go to the Event Attendance tab:
Change Attendance Taken to Yes, Default to Invited

Click Update
For anyone not attending plus the coach, change the Attendance Status from Invited to Declined

Click Update
Click on the Action Menu (lightning bolt)
Click on Update Student Attendance

Click on the Update Student Attendance button and then close
**You can check that only the students who are going to the event are propagating to attendance by clicking on the Class Attendance tab.