Chamberlain 374UT - Locate the Program;Learn Button; Chamberlain Products

3. Press and release the Program/LEARN button on your product. A ladder may be necessary to reach the Program/ LEARN button.
NOTE: Visit LiftMaster.com/374ut to program the Mini Universal Remote Control to a commercial door operator.
4. On the remote control, press and release the button that you would like to program twice. The blue LED will blink and the remote control will begin sending the
pre-programmed codes to the garage door opener. Transmission can take up to 60 seconds.