Suggestions

Insead of linking the availabiliy schedule to the person (or in addition to it), it would be useful to have availability time spots per service. As a teacher, I keep mondays for a specific type of service to my students and fridays for another service with my colleagues. 

Also, when I book a meeting with a student, the email or name fields are not searching automatically in O365 address book, I have to type their email as if they were users from external domain. Not a big deal but would be cool to search in adress book automatically when inputing a name or emial address.