Controlling the Selection in Multi Mode
You can control the behavior of this mode by clicking Edit > Selection Mode > Select Multi Mode Settings. This displays a dialog with check boxes for Object, Face, Edge, and Vertex. Unchecking a box cancels the selection behavior for that category.
You can also control the behavior of this mode on the Model ribbon tab by selecting the desired mode from the Select drop-down menu.
Related Topics
Selecting All Faces of an Object
Selecting the Face or Object Behind