Where should you modify an existing KPI hierarchy according to SAP Ariba's best practices?

Your customer is using SAP Ariba Supplier Lifecycle and Performance, and wants suppliers to accept a code of conduct each year outside of the registration process.
Which option do you recommend?

You create a new Supplier Performance Management project and want to display the supplier's name in the title of all future occurrences.
Where would you go to make this change?

You need to invite suppliers and internal participants to the same survey but would like to restrict their views.
How do you achieve this?

Which action enables the evaluation of a supplier for a preferred status level?