The operator/technician can open maintenance mode before the daily maintenance gets started.
Open Maintenance Mode
It can be opened from admin mode:
Step 1 In the AP backend → Tap “Maintenance”.

Step 2 Tap “Maintenance Mode”.

Step 3 Tap “Confirm” to start the maintenance mode.

Step 4 The AO and AP screens will show the message: “Maintenance Cleaning Underway”.

Close Maintenance Mode
Step 1 Tap the brand logo several times in a row.

Step 2 Tap “Back”.

Step 3 Log out of maintenance mode.