This is tips of upgrading your session:
Let’s say you book an hour session, let me know you want upgrade the session when it still has 15mins left before it finish, otherwise when you pay the extra, that will be only paying extra time but not paying for the extra service. Sometimes I will let the session goes little overtime but don’t take it as advantage as I have the right to cut the session anytime it suppose to be finished.
Rememer upgrade session at least 15mins before it finish
Have a good day!