Want to add another location in your “Places” menu?
- Open Nautilus.
- Navigate to the folder you wish to add to the “Places” menu.
- You can either a) Bookmark the location (CTRL+D -or- Click on Bookmarks > Add Bookmark) or b) simply drag the folder to the left pane.
As a note, you cannot add Applications to the menu. The Places menu is for just that: places!
The example shown here has the “My Documents” folder added to the places menu: