RFx Preferences 
A preference represents your first choice for an answer to a question. Preferences and scoring methods enable you to score questions so that you can compare suppliers on a side-by-side basis.
On the Preferences tab, you can:
Specify preferences and scoring methods
Adjust weights for all questions within a section
To set or change your preferences, do the following:
Open the RFx and select the Questions tab.
Add a new question or select a question to edit.
Select the Preferences tab.
To score questions, do one of the following:
Specify a preference and scoring method
Select Manually Scored as the scoring method when you do not specify a preference