Edit Subdivision Tool
You can access this tool by double-clicking on a subdivision surface or you can find this tool in the 3D modelling tool set.this tool is going to be your main way of interacting with a subdivision surface. It is a tool that you will be using to stretch, pull, push, squeeze, or in some way edit the subdivision surface.
Although this is a single tool there are several modes which we will look at briefly.
There is some great protected information here that is only available to paying subscribers. You must be an active paying subscriber to see it, but you can Subscribe here.