submenus inside applications menu

[tome-]

I didn't find any example therefore i place it here. You might add this to https://jgmenu.github.io/

No append or prepend but between application categories:

1. schema file:
   ...
   Name=Office
   Icon=applications-office
   Categories=Office;Printing;

Name=∗∗ My liked,^checkout(quick),access
....
Name=―>Places,^pipe(jgmenu_run ob --cmd="/opt/.../bl-places-pipemenu /home/.../Desktop" ),folder-recent

2. append.csv:
   ^tag(quick)
   #Back,^back()
   galculator,galculator,galculator
   xwmconfig,wmconfig,desktop-effects
   spacefm ~/.config,spacefm ~/.config,preferences-desktop
   lxtask,lxtask,utilities-system-monitor

Is it possible to execute new instance of jgmenu but with another schema like it is for "jgmenu --config-file="?
Is it possible to add Name=Hidden Categories=Printing;TerminalEmulator? - these apps would be hidden entirely
then it would be easy to create some submenus for .desktop files inside categories names declared in schema file.