Someone in the community has suggested the following approach to delete the projects created using Movie Maker:  

"Alternatively pin WLMM to the start menu.  The projects are listed and can be deleted individually". I would like to try this approach because I am not comfortable with editing the Registry. However, I can not find MLMM in my Windows 10. Do I have to download it from webs? If I download MLMM from the web, will MLMM be automatically added to the start menu? Do the project files (.wimp) listed under Movie Maker occupy computer space? Any help will be highly appreciated.