Select
Selection Filter. The Selection Filter dialog box opens. The
list in the dialog box includes all the element types used in the
open drawing-model pair. By default, all element types are
selected.
Click the element type Doors, Interior. Only this
element type becomes selected. Confirm by clicking OK.
Select the doors (A) and (B) marked in the figure. Hold down
the Ctrl key while clicking the doors.
Tip: If you select the wrong door,
re-click the door with the Ctrl key pressed down to remove the
selection.
Right-click in the working window, and select Properties
from the menu. The Door dialog box opens.