Just to add on, in regards to the types of choices that your story should contain, Episode has a guide on this:
Episode’s advice is “How Many Choices:
Include at least 1 choice every 15-20 lines of dialogue, with one that majorly changes the scenes at least once every other episode.”
When you’re on Writer’s Portal, you can click on guides, then once you’re on guides, under Extra Tips you can click on Quick Tips (all found on the left side of the book under What to Expect).