Word 2010 doesn't have a menu (unless you call Home, Insert, Page Layout, etc., a menu), and you can't customize what's not there. Word does still have context-sensitive right-click menus. However, unlike in previous versions of Word, the user interface no longer provides a way to customize them.
If you have any questions or suggestions, please feel free to ask OfficeToolTips team.
If you choose to use the grammar checker rather than turn it off completely, tell it which grammar items you
want it to check and which you don't.