I am using Lightroom 6.3 on OS X 10.10.5. When I open Lightroom, a recent catalogs list appears, which is quite helpful because I have more than one catalog. However, I would like to delete certain catalogs from the "Select Catalog" list, but I do not see an option that permits me to modify the recent catalogs list. Is there an option to do so, and if so, how? Thanks very much. I appreciate the assistance.
Delete them or move them using Finder/Explorer. As long as they remain where Lr remembers they were, it will list them.