In Zerodha, the Disclosed Quantity allows the trader to show some amount of shares he wishes to buy or sell. Once the order is transferred to the exchange, the system will display only the Disclosed Quantity on the market.
However, there is a condition that the Disclosed Quantity should not be equal or greater or less than the order quantity. The Disclosed Quantity in Equity BSE/NSE and NSE (CDS) cannot be lower than 10% of the order. While in MCX, it cannot be lower than 25% of the order. However, in NSE/BSE (F&O), one can place as many orders as possible as there is no option of Disclosed Quantity.
For instance, if the investor wishes to buy or sell 30,000 shares with 6000 Disclosed Quantity, then only 6000 shares will be visible in the market. After the trade, another 6000 shares will show until all the traded are fully executed.