The 3 levels of PCT in the download section states that it runs for 37 days, would that be after the cycle or during the cycle of lets say 8 weeks of test enanth accompanied by anavar and clen?
That's only for the PCT itself, which happens after the cycle itself and the bridging period that follows i.e the waiting period between your cycle and PCT. In your case your bridging period is the 30 days after your last shot of Test-En, in which you will run the Anavar and Clen. You will have to stop Anavar 1.5 days before you start your 37 day PCT.