When more than one part (or compound part or component) is visible, one, some, or all of the parts can be selected. When the parts are selected, select a view from the Parts View option menu such as Definition, or Center line Attributes. You can edit the selection of parts (or compound parts or components) in-place, within the Family/Part Editor dialog, by clicking the property you want to open its controls, or you can right-click, and select Properties from the popup menu. The dialog that appears can be used to change the same settings for the selected parts (or compound parts or components).