I would like to be able to upload the graphics from our local racing team and have our members be able to wear them on Zwift.
You need to submit the request to info@zwift.com or support@zwift.com there is an extremely long backlog for local group kits.
Here is a link to a KB about it: https://support.zwift.com/hc/en-us/articles/208367256-How-do-I-get-my-jersey-kit-in-the-game-?section=201304583