What I am trying to do is limit the flyout menu to one category (245) and it's sub categories. There are multiple other categories but those products will be accessed via a speed bar item or other link. I want this limit to be everywhere. It seems like it should be simple. It would be nice if there was an option for categories similar to products where a product can be hidden but active. UPDATE JUNE 30th: I found something I am going to try.
https://www.bcsengineering.com/store/hidden-categories.html
It took them a bit to get the code change to me but it works how I need.