Replying to Bike fork adjustments -help

well basically, i was learning jumps and one of the things I noticed is that my friends Track Fuel's rock shocks in the front weren't bouncing like mine was when he landed. I have a marazocchi dirt jam fork.

will rebound adjustment help this or do I need more air (they filled it up to my weight at the shop i bout it at like 2 weeks ago, so I would doubt that)

also, is the rebound on the oppsite cylinder that the place that you fill the air is? which way do I trun it to tightn/losten it?

any other adjustments that I might not know about that would help (it is the Dirt Jam Pro)