How add a delegated Mailbox into your Outlook app or Outlook Web Access (OWA)...

As of late 2023 the desktop version of Outlook has been updated, which has changed several steps for adding a Mailbox. Both versions are currently active and there is an option to switch between the 2 versions at anytime on the top Right of the Outlook App.

Below steps are between two users but is done automatically if a Data Access Request (DAR) is approved

Outlook Application (Old)

Click the File tab > Account Settings > Account Settings
Select your email address in the account list
Click Change > More Settings > Advanced tab > Add
Enter the delegated mailbox account name or address (e.g xxxxx.xxxxx@orbis.org) and click OK
Click Apply > OK > Next > Finish
The shared mailbox will now automatically display in your Folder pane in Outlook

Outlook Application (New)

Right-click the account name and select Add shared folder or mailbox.
On the pop-up window, type the email address of the delegated mailbox xxxxx.xxxxx@obris.og then click Continue.
Enter the password of the delegated mailbox if prompted.
The delegated mailbox should appear in the left pane under your account.

Outlook Web Access (OWA): (Manually done)
Opening delegated mailbox as a separate tab:

Click on your profile circle, usually on the upper right hand corner (either your profile picture or your initials)
Then look for "Open another mailbox"
In the "Open another Mailbox" dialog, Input the delegated mailbox, xxxxx.xxxxx@obris.og then click "Open"
A new tab will open the permissioned delegated mailbox.

Opening delegated mailbox in the same tab:

In the Outlook tab of your browser (assuming MS Edge), look for "Folders"
Then "Right-click" on "Folders"
Select "Add shared folder"
Input the delegated mailbox, xxxxx.xxxxx@obris.og then click "Add"
Now you see your delegated mailbox folder