Within the Parental menu, arrow to the right and select the Set Ratings category. The Set Ratings category allows you to set access to programming based on TV and Movie ratings. This will require that a PIN be entered in order to view programming at or beyond the rating you specify.
Use the Left/Right arrow buttons to choose a TV Rating. Options are TV-Y, TVY7, TV-Y7 FV, TV-G, TV-PG, TV-14, TV-MA, off.
Use the Left/Right arrow buttons to choose a Movie Rating. Options are G, PG, PG-13, R, NC-17, Adults Only, off.