Order Executtion system

I needed an order management software for zerodha that lets me make multiple lot orders at one go. So for e.g. Bank nifty max qty one can trade in a single order is 900. So if i have to sell say 4500 qty i hv to punch in 5 orders. Needed a way out where a single order of 4500 goes into zerodha system in a spliced way along with a stoploss in place