Create negative geometry (voids) to cut solid geometry with the Create Void tool.

 Draw panel, select one of the drawing tools.
Draw panel, select one of the drawing tools. 
 Form panel
Form panel
 Create Form drop-down
 Create Form drop-down
 (Void Form). A void form extrusion is created.
 (Void Form). A void form extrusion is created. 
 Form panel
Form panel
 (Solid Form) to convert this void to a solid.
 (Solid Form) to convert this void to a solid.