There are videos about the Helpers Lines but it's in French! ;)
(very visual :)
7 videos (all the left vertical column! )

https://moiscript.weebly.com/mini-videacuteos.html

There are also scripts for ehance Helper line function
http://kyticka.webzdarma.cz/3d/moi/#KeepCLine and followings

About the "instance" maybe you can try the Elephant nodal system...
Repository English French https://moiscript.weebly.com/biblio-elephant.html

Else you can use colors, names, selections and launch many sessions of Moi in the same time ;)