SA is a Guaranteed Conclusion so it's mostly cut and dry. PSA can but doesn't necessarily have to Guarantee the Conclusion. I treat them more like a strengthening question that strengthens 90% ish of the way.
The answer for an SA will make the argument perfect, the answer for PSA will make it nearly perfect, the answer for strengthen only needs to make the argument slightly better.
Click on Resources then LSAT Analytics then whichever test you are using. Fill in the answers just as you would on a bubble sheet and get ready to have a child named J.Y.
I don't use the 7sage timer... I use an analog wrist watch and I don't cheat.. its just as good... probably better as your guide on test day will be your watch. Proctor instructions typically vary by a few seconds so it will not be much of an issue.