Is it okay to upgrade xenon matrix when asked in Kodi. If older version works should you upgrade
Hello and welcome to our community! 
You can upgrade that way if you wish. Just look up the patch noyes and see if you need to.
You don’t always need to upgrade.
Have Xenon build. Added Crew. How do I put it on the movie/tv opening xenon page with other Addons to access versus search in repository