Pending order is the good and useful tool in trading which some prove us better in trading, means when we cannot to do trade or we cannot understand the market at the moment correctly and we guess that when market reach this level then i will trade, then you use pending order option set your target of order and shut your computer, when market reach at your giving level your order will automatically place and give you profit or loss.
Pending order is the useful tool which help us in during trading session, also we can trade by setting pending order tool, sometimes pending order will give us more profit, but sometimes give us loss, every one trade can give the pending-order and can do their other works, pending order will work automatically.