As far as I know, when I need to edit multiple nodes to a desire coordinate, I have to select each of the nodes and input the value one by one, as Staad manage Relative Move only.
It would be efficient just to select all the nodes, and type a coordinate value and all nodes move to that coordinate.
For instance, in the screenshot I need to move the 4 nodes on the right to Y=0.000. All have different Y value, so I have to type the 0 for each one.
Thank you for posting your idea. The functionality already exists in STAAD.Pro. use the Node selection cursor and select the nodes you want to move on the graphic window (hold the ctrl key to add/remove from your selection if not all picked in one go). Or you can select them from the Nodes table, you will see them highlight in the graphic window. Right click over the graphic window and select Move. This way all the selected nodes will be moved by the relative distance provided in the three axes.