To add or edit an alternate designator for an existing service address designator:
In the Designators form, select the designator's Type from the drop-down list. The designators assigned to the selected group are displayed in the left pane.
In the left pane, click on the designator. The alternate designators defined for that designator are displayed in the right pane.
To add a new alternate designator, right-click on any row in the right pane and select New.
To edit an existing alternate designator, right-click on the alternate designator and select Edit. This displays the Add (or Edit) Designator Alternate form.

The Add/Edit Designator Alternate window provides the following input fields:
Type
Group the selected designator belongs to.
Designator
Designator selected in the left pane, followed by the designator's Description (in parentheses).
Alternate
Enter the alternate spelling for the selected designator. A maximum of 10 characters is allowed.
To delete an alternate designator, follow the steps above to select the designator in the left pane, and its alternate designator in the right pane, then right-click and select Delete.