Multiple 365 Accounts in Outlook

[ITGURU]

On my phone i've got 2 Office 365 accounts (different domains) and can view my calendar with events from both mailboxes on one view,

However, in Microsoft Outlook i have connected my first Office 365 account and can view the data.

It seems that 'open additional mailboxes' option will only let me add other accounts under the same domain.

I dont want a different profile for each 365 domain as wont show both calendars at once,

How can i have 2 different office 365 accounts on one profile so all calendars can be overlapped when viewing on the computer?

[snagrat]

Just add a separate account, not another mailbox.

 

You can do this in Outlook or through the ControlPanel\Mail applet.