Talk to you CI Audie before you do anything ok ?
You need to make sure that you connect in a SAFE way as you can damage the processor BIG TIME if you try to just "retrofit something".
Your CI Audie will be able to properly explain how to use the DAI cable, and options that you can use to safely and properly use audio equipment with your CI.
On option is if the headsets you use are wireless FM with an attached headset the plugs in via a 3.5mm jack - you should be able to use a CI DAI cable to plug directly into the FM receiver box. Also some headsets have an Aux 3.5mm jack on them - you could connect the DAI cable to that 3.5mm headphone jack and connect it to your processor.
It's VERY important that you talk to your audie - give them specific scenarios, if possible email/text the people you work with so you can get the exact make and model of the headsets etc that you're using etc so that you and your CI Audie can find ways to SAFELY use your CI with the devices or find "work arounds".
Remember - your processor now is your "ear", and because it's electrical in nature, it's much more "fragile" and susceptible to damage etc than "natural ears". You need to be very aware of how and what you "connect" to, as well as things like static electricity (ie plastic playground equipment etc, plastic ladders can wipe the map due to electro-static)
I know a few people who, if they live in a dry climate, or in the winter keep some "bounce dryer sheets" in their pockets to "wipe down" their clothing (if they wear a hat the hat and their hair as well), and the processor to prevent static buildup that "shocks" the unit and can wipe the map.
One thing you specifically will need to be careful with is making sure that all the sound stuff is well grounded, and that YOU make sure that you're not accumulating static on your body (which will discharge and "zap" you & possibly the processor when you touch metal etc). One practical suggestion I have for when you're working in an concert/audio setting or in a high static zone is using ESD or anti-static footwear such as
THIS which should help minimize the risk of electrostatic charges wiping your map.
Hope that helps - glad things are going well so far