In the Probe Utilities dialog box (Insert | Hardware Definition | Probe), select the Add Angles option. You can use this option to key in new AB angle pairs to the probe file. If the tip is already calibrated, then the new AB combinations are also calibrated and made ready to use. Once you leave the Probe Utilities dialog box, you can use these new AB combinations by selecting them from the Probe Tips list located on the Settings toolbar (View | Toolbars | Settings).