Forecast issues

Hi,

I have some questions about forecast management:

1. Why I don't see consumption when I change the period indicator in week?

Same material:

2. Weighting group: how can I know how many periods does the number 1(2,3,4) consider? In other words I'd like to know where I could define or discover for which consumptions the system uses for example the weighting factor 40,00.

3. Tracking signal: "Value that specifies the amount by which the forecast value may deviate from the actual value". Which is the actual value? Is it the real consumption of past periods matched with past forecast values?

Thanks