Check In a Member
Check in a client when they have arrived for the session. Check-in means they attended, not only that they booked.
Booking Dashboard shows a Checked In card. The main dashboard can also show Check-ins Today.
Steps
Step 1 — Open Today’s Schedule
Open Training → Booking → Today’s Schedule, then select the class.

Step 2 — Find the client
On the attendee list, find the person (name and email).
Step 3 — Mark attendance
Open Mark Attendance on that card and choose the attendance result Fitnez Studio shows.
The capture shows the Mark Attendance control. Exact menu options after you open it (for example checked in vs no-show) are not fully labelled on this screenshot. QR check-in may also exist in Settings — not shown here.
After Check-in
Checked In on Booking Dashboard and Check-ins Today on the home dashboard should reflect attendance for the day.
To check in several people at once, see Check In Multiple Members.