How to Steps
Add a delegate Outlook 2016 for Mac
Important: To use delegation, you and your delegate must have Microsoft Exchange account.
1. On the Tools menu, click Accounts.
2. Click the account that you want to add a delegate to, click Advanced, and then click Delegates.
3. Under Delegates who can act on my behalf, click Add .
4. Type the name of the person that you want to add as a delegate.
5. Click the delegate's name in the search results list, and then click Add.
6. In the Permissions box, select the permission level that you want to set for the delegate for each item type.
Note: Before a delegate can access your items, he or she must add you to the People I am a delegate for list in his or her Microsoft Exchange account. For information about how to become a delegate for someone else, see Become a delegate or stop being a delegate in Outlook 2016 for Mac.