Main menu - Folder - Filter
When the cursor is over the main menu item "Folder → Filter" a sub menu with the following filter options is opened:
Activating the sub menu item "Set filter" or the shortcut "Alt+Y" opens the dialog "Set filter".
Clicking the sub menu item "Filter off" deactivates the filter (active in the active panel).
The sub menu "Filter" lists the names off all reusable filters as menu items below the menu items "Set filter" and "Filter off".
Clicking the name of one of these filters activates it in the active panel.