Animation Guidence - Medical "arms"

I have been creating a scene in UE4 which is just going to be a short cinematics in the end. Currently still in the blockout phase, but soon getting to adding some animation. I do want some minor movements to the arms of the operation gear as shown in the image, and need mostly some guidence on what to look up. I’ve only animated doors from within UE4 before. Currently I have linked the different arms in Max, and I am not sure how I Export/import this, if linking is not enough and I need to create some bones etc.

Any guidence is helpful to help me looking up proper information.