This type of signal will open 3 orders, one for each TP, and the total lot size will be split among the 3 trades.
There is an option to open only one trade with the first TP, but then you can only use setting the SL at break-even or trailing SL by some distance from price.
If 3 orders are opened, you can use the break-even option to set SL at the previous TP. So if TP1 is hit all SLs move to open price, when TP2 is hit SL moves to TP1 price.
At the moment we’re working on a fix for this since it was reported that in some cases this option doesn’t work. It will be available in the next version.