With the limit option, you can make a trade by typing the price and amount you have set.
Click the Buy-Sell button and select the trade item.
Enter the price you want to buy. First, enter the price you want to buy in the price box. Then enter the amount of your asset you want to buy in the quantity box.
Click BUY to place your limit buy order. Your order will be executed when the market price reaches your limit price (or better).