I need to move those vertices outside of the UV texture area back into the UV texture area. And I would like to do that “one at a time”. Problem is, as soon as I select vertex #1 (right side of the image), also vertex #2 becomes selected. Obviously if I were to make a move I would be moving both vertices.
there is a button at the bottom right that allows you to select faces and what not if this doesn’t help. maybe you can click into the uv’s tab at the bottom and pack islands then re-arrange as desired.
hope this helps