Mouse-controlled hockey stick using FPS template

So I’ve been working on a first person hockey game that utilizes the mouse to control the stick, while holding RMB down controls head movement, and I can’t quite get it right. I basically would like to map the mouse movement to the rotation of a small pivot point connected at the top of the stick. The stick is just some boxes and collision boxes attached to each other, that are part of the default playercharacter. I can’t figure out how to manipulate specific pieces of the player character, like the stick, but instead I’m able to move the player as one big thing (stick, body all in one). Is there a different way I should be approaching this? This is being done in Blueprint btw.

heres some pics to help