The group is where everything for this masterclass happens. The joining link is posted there before the session starts, along with a reminder on the day so it does not slip past you.
Between now and the session you can ask your questions in the group. Umeet answers there personally, so you can arrive already knowing what you want to work on.
After the masterclass the group stays open for daily guidance, so you are not left to figure out the next step on your own.