Step 1: Games
CSV format: Date,Time,GameID
2026-07-26,09:00,G001
2026-07-26,11:00,G002
Step 2: Volunteer Availability
CSV format: PersonID,AvailableDate,AvailableTime
V001,2026-07-26,09:00
V001,2026-07-26,11:00
Step 3: Current Assignments
CSV format: PersonID,GameID
V001,G001
V002,G001