To Add a Pick List to an Item's Property Definition

Open the Item Types dialog (Drawing > Content > Item Types > Item Types Dialog Launcher).

Select the desired Item type property definition.

In the Properties pane on the right, select Type as Text then select the desired pick list name from the drop-down menu in Pick List row.

Select the desired pick list name from the drop-down menu in the Pick List row.

The pick list gets associated with the property definition.