Creo 3.0 3D-section

Hello,

I have a question about using zone for a 3D-section.

Is it possible to make a zone that it's not perfectly a cube ?

The zone that I want to make has a corner out, to clearify more parts in my drawing.

If it's not possible with the zone feature , are there any other options ?

I searched already over the forum but in didn't find any clear answer.

Thanks in advance

Kind Regards