I'm glad that it seems to work! Thank you!
The operation manual is published on the devlog.
[PELOGEN2] Modeling screen - View
[PELOGEN2] Modeling screen - Tools menu
[PELOGEN2] Modeling screen - Vertex selection
I translated it from Japanese on occasion, so the expression may be a little unnatural.
There are other explanations as well.
Please read as necessary.
https://bitchunk.itch.io/pelogen2/devlog