The Budget itself is the main analysis. on this "How To" no details are explaied, but most upcoming questions.
Why is there a star "*" on some rankings:
The "*" shows, that this uncertainty is calculated, but other effect are bigger. in the VDA5 many uncertainties are in groups together. and only the highest influence is taken in the overall calculation.
Why is the smiley yellow?
As of Version 14.0.4.1, a Study where components are marked, but have no content, are defined as "yellow", till all activated components are filled in the budget. in the Form Sheet the text can be read: