For instance, you can set OneCommander as the default File Explorer by clicking the hamburger icon in the top-left corner, navigating to Program Settings > Advanced, and checking the “Register ...

Press the Win + X keyboard shortcut or right-click the Windows icon in the taskbar. Click on File Explorer to open a new app window.

Open Gallery in File Explorer, then click the Collection menu in the actions bar. Click on Manage collection to see which folders are being tracked for Gallery and the option to add or remove folders.