Hi Reeta, 1. Yes you can add multiple calendars to it but those Calendar must be shared with same Google Account. For example your employee must grant access to his own Calendar in order to see it inside EA settings like on this video https://www.youtube.com/watch?v=KQ8r33WHng4 2. Customer can import Events from email ical file. You can add ical attachment in customers mail notification so she/he can add that event to own calendar by simple click. Same is for Canceling event there will be attachment with that. Best regards, Nikola