When you need to trade in several instruments at once, the Basket Trader module is intended for this purpose.
To start using the Basket Trader module, add the relevant instruments to the module. To do so, drag instruments from the Instruments module to the Basket Trader module. Basket Trader shows the basic info of each instrument and the parameters for creating orders, including: Instrument (name of instrument), Currency (type of currency), Bid Size (quantity of bids), Bid (bid price), Ask (ask price), Ask Size (ask size), Quantity (quantity of instruments), Side (trade side: sell or buy).
To create market orders for the selected instruments, specify the Quantity of instruments and trade Side (buy or sell) for each of the instruments in Basket Trader. You can also select a multiplier for specifying the quantity of instruments.
Select the relevant multiplier in the bottom left part of Basket Trader as shown in the image below:
Now click Buy or Sell to create market orders.
You can also use the Basket Trader functionality together with the Click Trade module or Order module. To do so, drag an instrument from the Basket Trader module into one of the two modules, and the corresponding instrument and its quantity will be selected automatically in the Click Trade module or the Order module.