Need help with averaging analog readings

unfortunately, the program did not find anything.
I pressed “add library” and passed “gweimer/utils/running-avg”, but nothing was found.

At this topic (Need help on averaging numbers for a project) man created a patch, but I was confused with adding “Port”, “N”, “pusce” and green cirle in the buttom. Where he fount them and the true names of thise nodes. I think it is very common qissue to find an average number. Please, help me.