Mine was confusing at first but the tech specialist at Lexus said I had a "rolling" number opener. All I had to do was hit the
learning switch on the opener then while it's light was still blinking push and hold for 2 seconds the #1 I wanted to program on my NX and do this two or three times.
On the third 2 second hold it connected and has worked perfectly. I didn't see any of that approach in the manual.