Hi @Autiboy,

I don't know how to do this myself but I didn't want to leave your question unanswered.

I would encourage you to read other posts in the community about the HTC and Oculus headsets/controllers to find out how others have connected them to ARC. The Valve Index may be similar. 

Here's one of those posts: https://synthiam.com/Community/Questions/Using-Vive-Controllers-for-Arms-18646

Thanks @Jeremie for the help.  I will look into this a little more.