Animation Montage Help!

I have a light switch SK mesh, with 3 switches A/B/c, one bone per switch. I have an idle animation and:

A flick down + A flick up

B flick down + B flick up

C flick down + C flick up

When I press E, A flicks down, then when I press R, I want B to also flick down but without affecting A (I want A to stay down, instead it reverts to original position).

Help me set up this anim montage or at least link me to a good youtube vid :frowning:

the animmontage documentation isnโ€™t clear :frowning: