3d sketch

Alibre Atom, recent update

So I have a part that I managed to get the surface correctly lofted but I now need to build a pocket inside of it. I want to make the first step of the pocket inset .250" and then it gets lofted to a flat bottom (sketch 11). How do I go about getting the first step? I have created a 3d sketch...

Is there any way to automatically select the correct sketch plane (i. Lock depth movement) when selecting Front, Back, Top, etc views? Also, when rotating around a model, is it possible to just move nodes, etc in the plane of the screen view, i.e. lock the depth vector? I'm finding wiring and...