In the Call to Banners School part Kennys buddy ability won't work

[TurtleScientist]

I try to use Kennys buddy ability but it won't work, I use the Q button and then click F to use it which pops up yellow arrows pointing in the direction of the ability but when i try to heal the charecter the finger pointing down has a red line through it and wont let me use it. Please help

[kaoswar]

Well, if I did understand well, you need to heal some NPC in the game with a partner. The only partner [or buddie] that can heal other NPCs is Butters.
Your buddies have something like a buddie command outside battle. Below is a small list for each of them:
Butters: heals others NPCs outside battle. There is a good amount of points in the game that you will need to use Butters to proceed.
Kenny: Kenny uses his body to seduce enemy NPCs. Again, you will need to use it at least in 2 points thru the journey.
Stan: Stan uses Sparky to increase the puddles of water (by having the dog peeing on the puddles).
Jimmy: There are a few of areas in the game that you encounter as
a part of the main plot that can be accessed using Jimmy’s specialty of being handicapped.
Cartman: doesn't have a buddie skill; Nor that I could have noticed in any point when I replayed the game.
Kyle: same as Cartman.

If healing you seek, the I guess the right buddies you need is Butters. Try that out.