Multi Currencies HiLo is using the 28 pairs.
You need a broker without missing bars for the different pairs (like Pepperstone), otherwise it will give bad signals.
You will have to open the chart of the 28 pairs to make it work properly.
A signal will appear if the price is breaking the highest/lowest value of the last x bars on at least y pairs and the current one.
Larger is the number of pairs with a signal, more enlightened and bigger will be the signal.
It is a private indicator available in the Elite Section.