When you have connected your private calendar under your account settings, the following events will sync automatically to your calendar:
The final option for group polls you have created and closed
The final option for group polls that you have participated in
1:1 meetings that others book with you / you book with others
Booking page meetings that others book with you / you book with others
The following events will not sync automatically to your connected calendar
Tentative dates for polls you create or participate in
The date selections of other participants