Basically it's the same as setting it in the radio. There's a failsafe screen with bar graphs for the first ten channels. I set the radio end point throw on the low end all the way out to -140% go to the smoothflite display and touch the throttle channel bar graph which turns it from blue(hold position) to green( failsafe set position) and then save. Smoothflite recommends setting the FS in their unit and warns not to set both the radio and their unit as it can cause "jitters"