Changes

ZenFire does not support Native One-Cancels-Others group. In this case MultiCharts emulates OCO group on its end. Simulated OCO-group means that all OCO orders are sent to the broker, price is monitored by MultiCharts and once one of the orders is filled, other orders from this OCO group are cancelled by MultiCharts. When one of the OCO orders is filled, MultiCharts sends a command to cancel the second OCO order to broker. Note that the second order may also be filled if price reaches its level before the cancellation is processed by the broker (see [[Trading Risks#OCO Risks-Orders Risk|OCO-Orders Risk]]).