The phrase "minimal supervision" means that there is very little or almost no one watching or directing you while you are doing something. Full definition
Self starter with the ability to work with minimal supervision in terms of both clinical procedures and administrative. (coverlettersandresume.com)
An established ability to follow oral and written instructions while understanding directions and new information quickly and working under minimal supervision. (jobhero.com)
Furthermore, I require minimal supervision as I have a profound ability to manage my priorities well. (coverlettersandresume.com)