A subscenario is a scenario that is created "under" a so-called global scenario.
Subscenario is well suited for e.g. occurring follow-up questions after a global scenario has been run.
This is how you build a subscenario:
You start by creating a new scenario, just like usual, you need to add training phrases and bot answers.
When this is done, press "Arrange order". You can then drag and drop the scenario so that it ends up under a global scenario.
Once you have placed your new scenario where you wish it to be. Press "Arrange order" again.
You have now created a subscenario 😃