You should plan to be available for the full booked duration unless the customer agrees otherwise through the app.
Booked hours
Jobs are priced and scheduled for a set length of time. Use that time to complete the checklist thoroughly rather than leaving early without communication.
Finishing early
If you finish all required tasks before the window ends, message the customer to confirm they are satisfied. Do not leave access secured properties until the customer or Instaclean policy allows checkout.