I first time experimented with the fantastic SubD Elements! Those are amazing for free form modelling! However, I found difficult to control a vertex based on its relative point position.
Lets say I have a cube and accidentally I move its one edge (two vertices) lower that the others. How do I easily move them to align to the other top ones?
You might also need to run the command ToolbarReset in the Rhino 7 WIP and then check the SubD toolbar group. There are selection filter icons for edge, face and vert selection modes so you don’t have to hold ctrl+shift if you like. There’s also a filter reset icon there too to set it back to all objects.
In your example, I’d select just the four top faces and scale to the Gumball origin in Z.