- Add's a player to the currently opened event.
- String - The name of the player to be invited to the event
You can't do invites while another calendar action is pending. Register to the event "CALENDAR_ACTION_PENDING" and using that, check with the CalendarCanSendInvite function if you can invite.
Inviting a player who is already on the invitation list will result in a "<Player> has already been invited." dialog box appearing.