Add Behavior dialog
The Add Behavior dialog allows you to add a new behavior to an object type. Some behaviors can only be added once and will not appear in the dialog if the object already has them. It can be opened from the Object Behaviors dialog. For documentation on each behavior, see the Behavior Reference section of the manual.
Simply double-click the behavior you wish to add. Select a behavior to see a brief description beneath the icons. The available behaviors can be filtered by name by typing in to the search box in the top right.