Hi jonah, actually it is not necessary to do anything special to set up a control point editable box in MoI unlike Rhino.

That's because MoI has a feature where it also allows you to turn on control points for a polysurface if the polysurface is made up of untrimmed surfaces that are joined to one another along a natural surface edge.

So in MoI you also don't need to worry about not having sharp edges in your revolve profile, the part that you do have to worry about is planar end caps since those are trimmed planes.

- Michael