Hi again,
I checked the slot point, and I could help but I think not as far as I woud like to go.
I will take another example for that. Let’s say I’m using a recipe, and going through the recipe, I reach a point of the story where I don’t have a specific ingredient (don’t care if my example is functional or not 
).
So I would like to go through my storie A (recipe ingredient by ingredient), stop at the egg part (since I don’t have it), asking me if I want to buy some. I say yes, so I jump to story B, a standalone story asking for what we wanna buy (you can keep number of eggs from story A). So I buy my eggs and then I want to get back to story A to finish my recipe.
Is it possible? Could you please provide me with an example?
Thanks.