I can not find a way to add an invitee after the event has been created and the invite emails sent. Is it possible?
Below is the already created event, where I do not see the field to "add invitees" any more:
Here is an event that has not yet been created, thus possible to add invitees:
EDIT: I use Exchange as the backend for the calendar... though had same issues with Google Calendar as backend as well.
Using Calendar Version 9.0 (2155.15)