Change the Current Section Plane

Click Sectioning Tools tab > Mode panel > Planes .

Click the Current Plane drop-down on the Planes Settings panel, and select the plane you want to make current, for example, Plane 2.

The selected plane is now visible (light blue wireframe), and can be manipulated. The other section plane is not visible but still cuts through the model in the Scene View for as long as the plane is enabled.

Tip: To see which planes are enabled, expand the Current Plane drop-down on the Planes Settings panel. Enabled plane has a lit light bulb icon next to its name.