Role/ Privileges to display Only Qualification Response Tasks to Suppliers

Summary

Role/ Privileges to display Only Qualification Response Tasks to Suppliers

Content

Gurus,

We have Supplier Qualification Management licensed for our implementation but not Sourcing or Supplier Portal. We would like the supplier(s) to be able to respond to qualification questionnaire without showing tasks for any other areas e.g. Sourcing, Orders, Agreements etc.
The seeded Supplier Sales Representative role gives access to Negotiation, Orders and Agreements tasks in addition to Qualification tasks. We only need the suppliers to see Qualification tasks.
We would like to know the exact role that will show only Qualification Tasks to supplier user. If there is none then we would need to know all the privileges etc. using which we can create a custom role that we can assign to the supplier users to grant access to Qualification Tasks only