The 1, 1.5, and 2 hour airline shows is gone in the new contract. It is now 1 hour, go at a professional pace, and the burden of proof is on the company and not the pilot if you can't make it.
You are on the clock at your show time. Your brief will have a show time and a go time. These times can be all over the place. You could get show at 0600 at TEB (assuming this is your base). Go by taxi to JFK at 0700. Airline on Brand X departing at 0800. or Show at TEB at 0600 and GO at 8:30 from TEB in tai number 555QS with 2 pax. Either way, your clock started at 0600.
Remember, you pick your base from the list of 100. There are no max or mins for manning at a base. All H-400 SICs can be based in VNY if the pilots want.