MATE menu is not configurable

I am using linux mint.
This is my Menu.

I am able to edit the menu under "Application". But I am not able to edit the menu under "Places" and "System". I would like to remove the "Package manager" and "Control panel" menu items under "System".

Is there a way to edit that menu?

Solution

1 way. You can edit menu System. Click right button on the button Menu, select option Preferences, panel System.

2 way. Try edit configuration XML files in the directories:

$HOME/.mateconf/apps/mintMenu/plugins/places
$HOME/.mateconf/apps/mintMenu/plugins/system-management