PHPStorm - Run Filewatcher on existing files?

1. Select such file(s)/folder(s) in Project View panel
2. "Help | Find Action" (Ctrl + Shift + A), activate check box for better results
3. Search for "run file w" (without quotes, obviously) and choose Run File Watchers entry

Alternatively:

1. "Settings | Keymap"
2. Find that Run File Watchers action (under "Plugins | File Watchers" branch)
3. Assign some custom shortcut
4. Select desired file(s)/folder(s) in Project View panel
5. Use that shortcut from step 3

Alternatively:

1. "Settings | Menus and Toolbars"
2. "Project View Popup Menu" branch
3. Find desired location and click on "Add After..." button
4. Locate Run File Watchers action (it's under "Plugins | File Watcher" branch) and click on "OK" button
5. The action is now accessible via content menu in Project View panel and can be used on desired files and folders.