If you want to transfer all events owned to another user like when you go to delete a user and get asked about calendar events (and drive data for example) use the followinggam create datatransfer|transfer <OldOwnerID> calendar <NewOwnerID> [release_resources]https://github.com/taers232c/GAMADV-XTD3/wiki/Users-Calendars-Transfer#google-background-transfers
If you want to move a specific event to another user look at the following
gam calendar <CalendarEntity> move event <EventEntity> to <CalendarItem> [notifyattendees]
https://github.com/taers232c/GAMADV-XTD3/wiki/Calendars-Events#move-calendar-events-to-another-calendarFor example:
gam calendar st...@demo.cloudbakers.com move event id 3465motdo1t9ktnbqif7k38bh8 to al.b...@demo.cloudbakers.com