You'll need to start using custom formats. Please read the docs on custom formats and amc script docs on how to pass in custom formats for details there. The custom format will probably boil down to something like this, where you use UFC / Movies depending on whether the filename contains "UFC" or ...

Hello, I currently manage a plex server for some friends and myself and recently started adding UFC fights to plex. The issue I am having is it is sorting UFC into the movies directory, but I want to move UFC fights into its own directory "UFC". How would I go about making this adjustment? This is ...