The jamb is defined in door or window elements. In order to draw jambs, door/window elements must first be defined in the project.
Location of Jamb Command
You can access it under the Ribbon menu, Facade tab, Facade title.
Click the Jamb icon.
Click the door/window with the left mouse button.
At this stage, if you click the Change jamb side icon on the jamb toolbar or press Spacebar key, the jamb place on the other side of the wall.
Finish the jamb command by clicking the left mouse button.
Choosing the door/window to place jambs
The creation of a preview of the jamb
Changing the placement with the spacebar
The formation of the jamb