A question about making a character mod

[Hamboy]

I am trying to make a character mod but i don't know how to give them the lines to examine things like the deerclops or science machine, i know how to do the other things like give them a title and description on the character select page.

Here is the guide that i used up until this point: https://www.youtube.com/watch?v=blBvIGkpUbs