Hero Tavern Question

I made a custom unit that is just the tavern with 5 custom heroes in it. Problem is that one of the heroes is on "purchase cooldown" while the other 4 are immediately purchaseable. Is it in stats somewhere, so that all the heros have no cooldown immediately?
edit: this occurs at the beginning of the game when the map is initialized

Stock Start Delay. I think that's the field.

Hm. No I increased that number from zero and it did nothing. :(

Okay there are 3 fields for this and hat blu said is the right field... Then you got the intervals when you buy it and the stock maxium which really does nothing

-Av3n