how to disable users with user role from making changes in ownership data in FCCS?

Summary:

How to disable users with user role from making changes in ownership data in FCCS?

Content (please ensure you mask any confidential information):

Client does not want users with user role to make any changes in the ownership management and change the settings such as Ownership Method, Ownership % etc. However, there is no option to disable that for users with user role. I tried applying security for FCCS Account dimension members like "FCCS_Consol Method" and "FCCS_Percent Consol" but it does not seem to work and users with user role can still make changes under ownership management.

Version (include the version you are using, if applicable):