Using trailing stop loss can be a very handy tool.
Trailing stop loss adjust itself with the profit that is going up. When it falls at the percentage given, it will sell.
Imagine you've got a position with BTC. The BTC rises until it has made a profit of 10% percent. If you've set the trailing percentage on 3%, the BTC will be sold if it falls back to 7%. It's possible that the BTC rises to a profit of 15%, now the BTC will be sold when it falls back to 12%.
We recommend setting a high "percentage profit", because when a position hits "percentage profit", it will be sold automatically. Even if the trailing stop loss is on. Alternatively, you can turn on the ''Use trailing stop loss only'' function.