Order placement query regarding nifty and banknifty options

How to place order if some has to trade like 50000 to 100000 quantity in nifty and banknifty options so as to maintain slipages as low as possible ?

Look at the order book and punch in orders slowly. If you place 5000 qty order and the order book is thin, then your order wont get filled.

If you place market order and the order book is thin, then you will have huge slippage.