To assign one or more tags to a file, a folder or a clip (in the Clipboard tab) in Windows, following are the ways.

Assign tags using the right click menu

Select one or more files, folders or clips in Filezo, right click and choose Tags from the menu to assign new tags, or edit an existing tags list.

Drag a tag and drop it over a file, folder or clip

Drag an existing tag from the Tags pane and drop it over a file, a folder or a clip to assign.

Assign tags directly from Windows File Explorer

Select one or more files or folders in Windows File Explorer, right click and select Tags files/folders from the menu to assign tags.

Tags are retained

Tags work seamlessly on NTFS file system. You can rename, copy or move the tagged files/folders without losing the tags.

Tags on other file systems are saved under a hidden subfolder called .filezo. When you copy or move any annotated files/folders, ensure that you also copy/move the corresponding hidden .filezo folder.

Once you make the changes to the files/folders, wait for Filezo to index them to see your tags again.

Tags assigned to clips in the Clipboard tab are saved and managed by Filezo itself, so they don't depend on the file system.