Restriction on AUDIT Dimension

Dear All,

I have a requirement for restriction on Audit Dimension for Certain users.

For e.g., we have 10 users and all 10 users currently can post to AUDIT DIMENSION "PCA" via FLAT FILE OVERWRITE and after that the users also run the scripts for Inputs made on AUDIT "PCA" so that the PCA Data  can be posted to different AUDIT.

1. Requirement is, out of 10 users, only 5 users should have access who can post on AUDIT DIMENSION "PCA" via FLAT FILE OVERWRITE and after that run the scripts for PCA AUDIT.

2. Remaining 5 Users should not have access to post on AUDIT DIMENSION "PCA" via FLAT FILE OVERWRITE but they should have access to run the scripts for PCA AUDIT.

For Point 1 mentioned above, I can control via Security but for Point 2, how can I control remaining 5 users, posting to AUDIT "PCA" via FLAT FILE but need access for them to run scripts on AUDIT "PCA" and post to Other AUDIT dimension?

Thanks and Best Regards,

Venkata