Hey Ilan,
Good question here which is important to make it clear.
You see the same entry point because the EAs from EA Studio work on the bar opening. And if you trade on M15, this means that when there is a signal from few of the EAs in one bar, they all will open on the opening of the next bar, which looks like the same signal but it is not. It is the same moment and price.
If you keep the correlation analyses checked in the settings, there is no way that you will generate strategies with the same entry or exit rules.