Pro teams set up differently. It depends on who they are playing and how their opponent typically tries to come out of their defensive end. The fore checking system tends to send only the 1st man in deep to fore check not too aggressively. The other 2 forwards set up near the blue line either in the neutral zone or offensive zone. Sometimes one on either side depending which side of rink the puck is on. The idea is to have five skaters end up in the neutral zone to “jam” up the opposing teams efforts to get into our defensive zone. 

By prioritizing defensive play this style of play tends to slow the game down. Basically it is good risk management to keep the other team out of your defensive zone unable to score for longer periods of time. But; a tad boring to watch.