1. If you only place an order, you can open a formal stop-loss order and a limit order in another way: hang the order at the price that requires a stop-loss price or a take-profit price, and offset (close the position) with the opened order. fxsol should explain this method accordingly.

2.NFA's position is that FIFO provides customers with higher transparency, which can provide more accurate profit and loss status than looking at the results of individual positions. This makes the foreign exchange market more consistent with the convention of futures and stock markets.

personally, locking orders is meaningless from the beginning, and stop-loss and limit orders also increase the frequency of transactions, which will hurt novices who are new to the market. And a prudent trader will never make the above two mistakes.