Select 'Settings.' from the drop-down menu that appears and then in the new window that pops up, click on 'Accounts' under the 'Personal Settings' section.With Outlook for Mac open, click on the word 'Outlook' in the upper left-hand corner just to the right of the Apple icon.When it is next opened, the resource account will populate. Click Done, then completely close Outlook.
You may be prompted to perform 2-factor authentication if it is enabled for your account.