You use the Send on behalf of send permissions to specify which users can send messages on behalf of the mailbox owner.
To customize send permissions for mailboxes
-
In the Manager, select the Azure Active Directory > Mailboxes category.
-
Select a mailbox in the result list.
-
Select the Assign send authorizations task.
-
Select the table which contains the user from the menu at the top of the form. You have the following options:
-
Mail-enabled distribution groups
-
Mailboxes
-
Mail users
-
-
In the Add assignments pane, assign users.
TIP: In the Remove assignments pane, you can remove assigned users.
To remove an assignment
-
Select the user and double-click
.
-
-
Save the changes.