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:
An uncertainty component marked with an asterisk indicates that this uncertainty component is not taken into account when calculating the total uncertainty budget for the whole measurement process. In this case, the same uncertainty information is contained in another uncertainty component whose uncertainty value is greater.
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: