Entry Stop/Entry Limit Orders are aimed at opening a position when a certain price is reached. These orders will be executed if the market value of an instrument reaches a predefined level. Entry Limit orders aim at opening positions in the future, when the market price has moved DOWN for a Buy order/UP for a Sell order. Entry Stop orders aim at opening positions in the future, when the market price has moved UP for a Buy order/DOWN for a Sell order.
If you have more than one account, choose the one that you want to trade from in the Account Information window or the Account Information bar. Right-click on the Bid/Sell or Ask/Buy rate of the desired instrument in the Dealing Rates window, and then choose Entry Stop or Entry Limit from the pop-up menu. The dialog box will appear:

Enter the order amount in lots. Enter the rate at which you want a position to open in the “Price” field.
If you want this order to be a Trailing Entry order, check the "Trailing Distance" check box and set the trailing distance.
If you want to make this order part of an OCO pair with an existing order, check the check box next to "Create as OCO for order.
Press OK. A new order marked ES (Entry Stop) or EL (Entry Limit) will be created and will appear in the Orders window.

This order will be executed at the time when the trader’s price matches the order price.