At my job, we have set up a serious of groups of people and assigned each of them an advocate, so the group looks a bit like this:
Jason Mike Steve Nathan Dave George Joe Chris
These are advocates with the people for whom they advocate below them. The question is if I'm talking to Dave, and I want to say about George "Well, he's your <insert word here>, so I thought you should know." what word would I use in that space?
I searched through google but couldn't find anything, the closest thing I could find here was this question , which seems to indicate the word I should use is "cause" but that doesn't seem right to me. Would this be the proper word to use, or is there a better word or phrase that I could use to convey this meaning?