The Intersect tool is used to keep the regions where multiple bodies intersect and remove the rest.
Click on the Intersect tool.
The pop up box will appear. Select the one body as the ‘Intersect’ part, and the other body as the ‘To’ part. (The order should not matter)
Click OK. Only the region where the objects intersect should remain with all other 3D material removed. Leaving behind the shape as seen in the image below. You will also notice that the bodies have merged into 1 Part Body in the tree, and “Intersect” appears on a branch of the tree.