we note that Trump Organization is capitalized. This means that the Manhattan DA considers it a legal entity, like any other he deals with.
It can be sued regardless of the current occupation or location of any humans connected with it.
I don't know, myself, but I believe it has been said that he cut loose from active dealings with his former businesses. Not the DA's problem; he goes after the entity at the legal address. He has done this many times before, without your help.
Let's say that someone there has been cooking meth and poisoning the air. Anyone who can show that he was out of town at the time is off the hook for that. That is not the case here. Trump's problem is that he's said to have benefited from the cooking. Puts him right in the thick of it.
BTW if true, DID the payoffs result in his 2016 win, on the grounds that his patriotic followers would have rejected an "immoral man"? [Pause for laughter.]
Sorry for all the mansplainin, but I was surprised to see you needed it.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic