How do i add another mailbox to my outlook

- How do i add another mailbox to my outlook 365
- How do i add another user's mailbox to my outlook account
- How do i add another mailbox to outlook on my iphone
- How do i add another mailbox to outlook on my ipad
- How do i add someone's mailbox to my outlook
- How do i add someone else's mailbox to my outlook
- How do i add a shared mailbox to my outlook sidebar
- How do i add another user to my shared mailbox in outlook
- How to add another account in outlook
- How to add outlook to gmail