Making Cost Factor edit form available in custom responsibility

Hello -

I am hoping someone might have some insight to add on the below question. I also logged an SR on this.

I have created a new responsibility and need to include the function to both view and edit Cost Factors for Purchasing in the responsibility. When I log into that responsibility, I can view the list of cost factors, but when I click on the edit button to update any of them I receive an error message: "You have insufficient privileges for the current operation. Please contact your System Administrator."

I believe that I must be missing a function that needs to be added to the responsibility, but have not been able to figure out which one it is. The following are the functions that I have already included in the responsibility: