There are suspended ceilings with different heights in a room. How should I draw the drop?
Click DRAW > Define Vertical Surface, according to business needs, choose to define the vertical surfaces for all edges or a specified edge of the suspended ceiling.
Take Specify Edge for example:
To define vertical surface for a specified edge, select Specify Edge, enter the height of the vertical surface in the input box, select the suspended ceiling edge to set vertical surface, and then right-click.