gnome-shell/data/gs-applications.menu

<Menu>
    <DefaultLayout>
        <Menuname>Apps</Menuname>
        <Menuname>Games</Menuname>
        <Menuname>Tools</Menuname>
    </DefaultLayout>
	<Name>Applications</Name>
	<AppDir>/usr/local/share/applications</AppDir>
	<DefaultAppDirs/>
	<Menu>
		<Name>Games</Name>
		<Include>
			<And>
				<Category>Game</Category>
			</And>
		</Include>
	</Menu>
	<Menu>
		<Name>Tools</Name>
		<Include>
			<Category>Development</Category>
			<And>
				<Category>System</Category>
				<Not>
					<Category>Settings</Category>
				</Not>
			</And>
			<Category>Utility</Category>
		</Include>
	</Menu>
	<Menu>
		<Name>Apps</Name>
		<OnlyUnallocated/>
		<Include>
			<And>
				<Or>
					<Category>Documentation</Category>
					<Not><Category>Core</Category></Not>
				</Or>
				<Not><Category>Settings</Category></Not>
				<Not><Category>Screensaver</Category></Not>
			</And>
		</Include>
	</Menu>
</Menu>