Given the situation you want to build up a short EURUSD position. The image above show a possible signal definition: first give your setup a Label. This will be displayed in the email you receive (if you check that option under Options). On the Details line, select EUR_USD as the currency pair. As you want to go short (and noone wants to go short on local price lows) you select Up move, which means that the signal only triggers if your definition applies to a price move up. As you might be not a long-term nor a short-term trader, you chose the threshold of 0.4% (that's T4). You decide that you want to go short everytime a directional change happens, hence you leave the OS level >= 0 (zero is the directional change number). As you want to open several positions, you check the repeat checkbox and also the Email notification checkbox.

Similar to the single position, you first give your signal a Label (here it obviously is 'Open Position'). As you want to be notified about any opportunity in the market to open a position, you chose Any for the currency pair. You are also indifferent with respect to going long or short, so chosing Any move makes sense. Being a long term trader, you select the two biggest thresholds available, 0.8% and 1.6% (T8 and T16 respectively). You don't want to rush into positions, so you decide you want to let the price move into the overshoot, in your case you chose that every event from the second overshoot on triggers an alert (OS >= 2). You should check repeat because otherwise, the setup will vanish after one alert has been sent out.

So, you have an existing long position in GBPCAD. You want to close the position if there is an extreme straight move down. You chose a Label that is meaningful like 'Stop Loss' and chose GBPCAD as the currency pair. Chosing Down move assures that you are only alerted when the market price drops. Your time horizon suggests to use a short-term trigger and you select T2 (which is 0.2%). You decide that you want to get out of your position if markets overreact with strength four, hence you chose >= 4 and as you only need the alert once, uncheck repeated.

You can also use the alerts for traditional services: let's assume you have a long position EURCHF at 1.23 and you like to get informed when the price crosses the 1.25 level. First chose a meaningful Label like 'Take profit EURCHF' and set the currency pair to EURCHF. Define the level to cross (here 1.25) and that you want to be alerted by email. That's it!