Zoom is not picking up my office 365 account email.

Hi There

When a schedule a new Zoom meeting my my Outlook mailbox are not available in the from field.
Zoom does not detect any of my Office 365 accounts.
In the from field drop down in Outlook it only shows my other mail accounts and not the new 365 business accounts.
Creating a regular meeting with Outlook Calendar is fine. 
Just scheduling Zoom meetings.