[FE1/2] EXP destribution editing?

Just trying to revive old games here.(Yeah, I know I said FE1 is beyond me, but lul. Screw that.)
Anyways, I wanted to ask if it would in theory be possible to make staves give the healer EXP. The reason I ask is that like half the game seems like unchangeable nonsence to me and it might just be coded in a way that makes staffexp impossible to implement.

But hey, it is probably my fault for jumping into hell before mastering earth(FE GBA hacking. Still too incompetent for simple repointing somehow. I am really trying to learn, but I just seem to be retarded or something.)