You can select different trading preferences according to your personal likes from your Account Settings Menu 
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Here are some of the preferences you can adjust your account to:
Preferred Trading Mode - There are two trading modes you can choose from Hedging and Aggregating mode.
Position rollover - You can enable/disable the Rollover option at any time you like.
One-click trading - Enabling this option will require no confirmation from your side to execute your trades.