Unfortunately, that is not possible. If you have move than one choice that would fall under the same amount of days, you can group them.
Choice 1 = 6 days
Choice 2 = 6 days
Choice 3 = 8 days
Choice 4 = 8 days
Choice 5 = 6 days
You could group it like this:
So,Do i have to create different campaign for different wait steps?
You can create a requested campaign.
Create one with a 1 hour and 1 day wait step. In the Flow Step, based on your condition, request either of the 2 campaigns.
More triggered campaigns will slow your system down, just FYI
Exactly - or like Stijn suggests, one main campaign that requests different campaigns with different wait steps.