You can add any of the following objects to all types of panels:
Applets
To add an applet to a panel, right-click on a vacant space on the panel, then choose Add to Panel. Choose the applet that you require from one of the following submenus:
Accessories
Actions
Amusements
Internet
Multimedia
Utility
Launchers
To add a new launcher to a panel, right-click on a vacant space on the panel, then choose Add to Panel -> Launcher.
Main Menu
You can add the Main Menu Launch icon to your panel. The Main Menu contains all applications and configuration tools. To add the Main Menu to a panel, right-click on a vacant space on the panel, then choose Add to Panel -> Main Menu.
Menu Bar
You can add an Applications and Actions menu to your panels to provide quick access to a standard set of application launchers and common actions. To add the Menu Bar to a panel, right-click on a vacant space on the panel, then choose Add to Panel -> Menu Bar.
Drawers
To add a drawer to a panel, right-click on a vacant space on the panel, then choose Add to Panel -> Drawer.
To open a drawer, click on the drawer. To close a drawer, click on the drawer again.