This involves Cheat Engine with the same methods of using mountain climber.
The Code is:
8E3F50
Values:
"1" worked for me, but same with really random large numbers too.
"But, it isn't working."
You can't RIGHT click the persons portrait and follow, because your client won't let you do so until you are in range, but with the code plugged into cheat engine, target the person in your faction you want to follow (any distance) and then type /follow.
Peace.