The Section Analysis tool provides a single face to cut the model along the X, Y, or Z planes.
Sectioning doesn't affect the design file. Sectioning only affects the view of the model temporarily until the viewer is closed.
On the viewer toolbar, click Section Analysis then choose the type of sectioning you want to use from the following.
Drag the desired manipulators until the model is sectioned the way you want.
When done, click Section Analysis again to turn off sectioning.