Hi Sandeep,
ESP can combine multiple outputs in a few ways. You could use multiple join windows to join everything back together after running each scenario in parallel on the data. You could also use a pattern window with a pattern that detects each of the scenarios produced an answer, then output an event.
I'm not sure I understand the second part of your requirement, "Also for multiple outputs of different scenario we want to prioritize single output."
What do you mean by prioritize single output? Would the same input event create multiple output events for the same scenario?
Thanks,
Andy