Animation Sequence/Montage only on selected bones

Hello, sorry if my question has already been asked, but I can’t find an answer anywhere and don’t understand it in the documentation.

I have a character mesh with some animations, like moving around, dodging, etc.
I want to implement a new animation for attacking with the right arm, but I can’t understand how I could make my sequence or a montage animate only the right arm bones.

What I am trying to achieve is an attacking animation that can blend with the walking and running animations when the player attacks when moving.
I think it has something to do with additives.

Thanks for the help.

Okay, finally found out myself.
I had to search externally to get to the corresponding doc page :

Sorry for the stupid question.
Hope that’ll help someone else.

You saved my life, thanks.

Sorry for the bump, just wanted to say that this solution still holds up for UE5.4, thank you so much!

You’re so awesome dude, thank you so much!