Unroll Surface

I would like to know what the plugin name is.
Or is there a way to do this in the second video onwards?

Did you even try to type the command Unroll?

Trial is not based on video. Probably a plug-in, but do not know what plugins are. Thank you very much for replying.

The plugin is indicated on the menu bar,in the video, it seems to be RhinoShoe.

RhinoShoe is a plug-in to the size of a shoe. Thank you very much for replying.