Are you referring to placing those orders on the chart?? If so, make sure “Trade Mode” is on in the settings. Once it is - just click on the chart at the price you want to buy at and then choose the correct order (Limit/Stop Loss). Do not click on the actual price, but on the chart at that price. Once the order is in, you can drag it to change it if needed.
I am not sure if this is what you were referring to, but I thought I would take a shot at helping 