The is easiest way is to use MenuEntryMaker Menu Entry Maker or Pmenu which allow visual editing.

.desktop files are the standard way for Linux programs to provide information about themselves and how they are run. These files are stored at /usr/share/applications. The Categories= entry controls which submenu they appears in. Run fixmenus and restart window manager after making alterations. See AppsDesktop .desktop for more informaton.

1. Create a new .menu file in /etc/xdg/menus for your submenu, ensure the categories you want are in the submenu are included.

2. Edit /etc/xdg/templates/_root_.jwmrc to tell it about he new .menu file you made.

3. A program's .desktop file (in /usr/share/applications) sets its category and therefore which submenu it appears in.

4. To set the icon creat a .directory file in /usr/share/desktop-directories.

5. Enter the commands fixmenus then jwm -restart to update Puppy

PuppyMenu Puppy Menu

JWM JWM window manager

WindowManagers Window Managers

AppsDesktop .desktop file

How I customize my Puppy menu (for jwm) - Method 1

How I customize my Puppy menu (for jwm) - Method 2