The mailadres of the shared mailbox consist of 3 parts:
1) the part preceding the @
2) the (abridged) name of the relevant organisational unit
3) the domain
1 2 3
Enter below what you want parts 1 and 2 of the functional mailbox to be.
You can also indicate under what name the mailbox should be listed in the Outlook address list.
NOTE: If you need (as a requestor) mailbox access too, you need to enter your own ULCN-name too in field 'Add to shared mailbox'.