I've recently started experimenting some with the forecasting tool and came across something that I found to be interesting with a forecast possibility being negative. The image attached reflects quantities that are ordered for certain goods so clearly this is not a feasible forecast. I am currently using a custom forecast with additive, additive for trend and season due to the fact the automatic model would not work and was producing a straight line. Any thoughts on how to remedy this?
Additionally, does anyone know how to remove the shading around the actual predicted value?