What do you call a person who is the target of an advocate?

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?

Solution 1:

1. If this was a mental health situation, I'd go with "As x is one of your charges, I'd thought you should know...."

https://www.macmillandictionary.com/us/dictionary/american/in-someone-s-charge

"if a person or thing is in your charge, you are responsible for taking care of them"

2. If a business mentoring/oversight division of responsibility, 'protege' may be appropriate.

What is the difference between mentee and protege? As nouns the difference between mentee and protege

mentee is a person who is being mentored while protege is a person guided and protected by a more prominent person.

Mentee vs Protege - What's the difference? | WikiDiff

Solution 2:

It is a word rarely used but it might be helpful in this case.

defendee

1 If you are working alone, stay just in front of and to one side of your defendee.