Not AWS specific but maybe this is what you're looking for? Should be able to get you there.
Hell's bells... No clue why that link a'la old school markdown syntax is broken. Try this:

Dear NodeBB Team,
I'm running NodeBB with Plesk 12.
How I can configure NodeBB so that it only will work on a specific Domain and not at the whole host?
Cheers,
Andi
Yes I've tried it.
Getting an Error. After hours of Google - I have no Idea to fix it: