How to move an end point

I’m trying to move the edge points of this surface to different heights but the control points don’t allow me to. Is there any way to do it
Thank you

There are countless ways of doing it…
It only matters what is your final goal…

Thank you so much for your reply. I tried your method but the issue is i want a single point to be lifted at a time and on a surface not a curve. Something like this but a surface in this shape. Your method moves the full curve( image is in front elevation)

What you have is a trimmed surface, not a surface. What this means is there is no nice way to do that. If you don’t understand nurbs surfaces you can look here: