If you wish to enter attendance for a workout that has already happened please follow these steps.
Tap Hamburger Menu > Attendance.
Tap the desired roster in the correct location.
Tap the pencil in the upper right on a phone, or EDIT on a tablet.
Tap the Date & Time field and select the prior date and time the attendance occurred, Done.
Enter any other parameters such as distance and notes, then tap SAVE.
Take attendance for that date and tap SAVE.