Thanks for checking in.
Are you referencing the area on the front of the camera by the stereo microphone? That is actually the Instant AF sensor used for locking in the autofocus. It will not illuminate, but you'll want to keep that area clean to optimize focusing speed. It's not a bad idea to clean it with a lint-free lens cloth from time to time.
Thank you for your reply.
You will need to have a paid subscription for the EOS VR Utility plugin to work properly. Once you've gotten set up, you can reference this video that our colleagues over in Canon Europe put together:
The tail-end of the video offers a visual guide to using the plug-in within Premiere.