Question about option buy limit

So i know that you guys allow us to buy NRML options in the quantity of short options. So if someone has shorted one ce and one pe, he can buy 2 Options. He can buy both ce if he wants.

But do you allow it across the index. If I have 1 BN ce and 1 BN pe short, can i buy a nifty ce and nifty pe?