Hong Kong Airport direct transfer to Macau ferry terminal.

I am going to reach the airport on 18th April morning. I am told that I will be directly transferred to Macau via ferry and I need to collect my luggage after I reach Macau.
After landing in HKIA where do I need to go(my first time to visit) to board the ferry to macau since it is a very huge airport?
How to reach the ferry terminal and what needs to be done...if you can help me in details about my transfer?

Thanks.