Hello Sunil,
Glad to see you in the forum. Yes, you can generate strategies with EA Studio and FSB Pro from a scratch.
Once you go over the courses, you will see that you do not need any preset indicators(unless you want them in the strategies).
The most important is to generate the strategies over the Historical data from your broker (I teach that in nearly every course) and to have good and strict acceptance criteria.
Last, you need to have a good system to choose which EAs from Demo to place on Live, and most important how to follow the results on Live, so if you notice that one EA losses edge, you need to remove it immediately from the live account