Fusion cloud supply plan: Gross requirements calculation

APICS definition of Gross Requirements stablishes the necessity of a rule to consume forecast by sales orders. For instance, in JD Edwards this is defined by Planning Fence Rule parameter where you can stablish how the plan will consume forecast before and after the Planning Fence (Sales Orders only, Forecast only, Sales order + forecast, The greater between sales order or forecast, forecast constumption periods logic).

So far I could not find documentation in describing in detail how Fusion manages this feature, what parameters to set for each business model and how the system calculation will behave in each one. Does anyone knows if there is a document or video showing this setup and some examples?