The work area (user interface) > Viewports > Drawlist > Show objects in a viewport's drawing list
  
Show objects in a viewport's drawing list
The Add option can be used to include objects in the drawlist. To add objects to the drawlist:
1. Right-click in the Structure Browser.
2. Specify the objects you want to show in the viewport. Use one of the following ways:
Click the object's icon in the drawlist and click Add.
Click Add and double-click the object in the drawlist.
Click Add and click the object in another viewport.
Click Add and enter the object's name.
To display an entire assembly structure, click the toggle button next to the assembly's icon.
To display an object, click the toggle button on next to the object's icon.