@dbeato said in O365 - shared mailbox full access to another calendar.:
YOu can actually give Full Details mailbox permissions to calendar to the Shared Mailbox either with PowerShell or Local in Outlook or Web access.
I'll admit that my user told me they couldn't - I didn't try myself... I'll if if I can remote in and give the shared mailbox access.
These seems rather bizarre that you would give permissions to the shared mailbox because it could be an end around for someone who shouldn't have permission to get them.. but meh.