If you have something like 'First class free', here is the recommended way to set that up.
- Create New Plan
- Select 'Punchcard' as the type
- Its good to make it expire after a week in case they don't use it, it will clear it off active plan lists
- Set total Check-ins to '1'
- Set 'Are People Who Buy This A Member?' to NO.
Its better to have this as a Punchcard rather than Non-recurring as it will automatically switch to 'completed' status once they check-in against it and use it.