Trailing Stop-Loss, back then lay
Supposedly you have one or more back bets placed on different selections.
The triggers will maintain a trailing stop-loss function: that is whenever the price drops down and the market is in your favour, the current lay price of the selections that you backed on will be remembered. As soon as the price of any of those selections gets 5 ticks higher than the lowest registered lay price, a stop-loss lay bet will be placed to distribute the loss from that selection equally among all others in the market.
For example, you backed at 6.0. The price then keeps going down till 5.2. Then it starts growing again. Now, as soon as it gets to the point of 5.7 (5.2 plus 5 ticks), the trigger will place a stop-loss bet to cover your losses, or in this case, to prevent you from losing profit.
Having loaded the triggers, you can bet on any number of selections, be it one bet or many. There is no need to change anything specially for that.
You can edit the number of ticks by which the price may change in the trigger called "setting stop-loss in price ticks".
Here is a screenshot demonstrating how the triggers work. You can see than there were two back bets placed, and a lay stop-loss bet was fired after the price of Bubbelas jumped up to 7.8, which is 6 ticks higher than 6.6, the lowest lay price it had.