Menu Button

what is the distinction between a button and a menu button?
it seems that the menu button offers a drop down list, but i don't see how to add more than one item

i am try to make a custom list of folders to jump to (i do know about favorites, i am trying to learn about this for some other stuff)
thanks
ds

Just right click the first button you created, or just drag and drop the folders onto the menu (in customize mode):

drag worked, thanks
couldn't get the add to work but i must be doing something wrong, i will figure it out though
ds

Menu-buttons have both a button and a menu. If you right-click the button part you can edit it like a normal button. If you click on the drop-down part on the right of it then a sub-menu appears which you can edit like a normal menu.