Thanks for the responses.
I have a couple of follow up questions. I have created a new share based on the information in the manual, Movies and this is set to split at the top two directory levels, within this Movies share I added three new directories, 4k_movies, hd_movies and kids_movies. I have now configured radarr with the new root folder of /movies under media management. Am I able to grab new movies and have those be sorted and moved automatically into the correct folders based on the type, ie 4k?