Dial Feature 00 from ext 10. Press the button you would like to program, press the intercom button and dial either the x you want that button to go to or dial * and the ext you want that button to go to. Press the next button or Feature 00 ti get out{or for the novice, lift the handset and hang up}. Now you might ask, what's up with the *. When you press the button to call that person, if you programmed without the star, it will ring the phone. If you programmed with the *, it will send your voice through the speaker on the phone and you can do a personal page. As well, when the person is on the phone or do not disturb is enabled, the red lamp next to the button will turn red.