Edit ply files

I have a PLY file that looks like this
Selection_297

I need to be able to edit the file.
Basically, I need to pick any of the points and drag it

Is it possible to do this with the vtk.js library?

I am not sure this will work with PLY, maybe you should try OBJ(OBJReader) where you can define multiple objects then you will be able to pick and drag them.