About the Creation of Walls from a Sketch

Selecting a sketch with an inner profile (the profiles must not intersect) allows you to directly create a wall with a hole.

However, the emptied area is part of the wall and is not a separate cutout that can be edited.

Sketch with an inner profile

Resulting wall

Clicking Sketch from the Wall Definition dialog box allows you to directly edit the selected sketch.

In this case, Sketcher is automatically activated, displaying a square sketch constrained to the plane, perpendicular to the support of the selected edge.

You can then directly draw a sketch, and then exit Sketcher, and return to the wall creation step.