Mine is set just like this right out of the box…
The sensitivity sensor is set to half way as is the Time Delay Adjust so what you do is turn it all the way to the right then back 1/2 turn on both :)
The Jumper is L Single trigger…
OH by the way PIR sensors and the Pi 3 sometimes don’t get along - if you’re having false triggers, make sure the PIR Sensor is far away from the Pi 3… So get it as far away as you can :) I would try that first before making anymore adjustments!