I received a reply from tech support:
So to my understanding, for 60 min, i have to install two jumpers. one on pin 1 and one on pin 2 as well.Jumpers go only vertically.
For 30 min short PINS #2
For 60 min short PINS #1 & #2
Hmm. I hope thats right. only one more thing to do to find out for sure... and thats doing it.
I'll report back later.