With Permission from poppabear, I offer up to the masses an altered version of poppbears "Profile Shapes Wizard."
to install extract the zip file to your Mach3\Addons folder.
This will create a folder called Profile Shape M.
The alterations are
Depth of Cut
added incremental cut
Define Z 0 as top of Block or Bottom of Block
And a Safe Z setting

Note that if the incements divide equaly into the Depth of cut, it may do two cuts at the same setting.

Enjoy
Wes