Role Owner in CUP

Dear Experts,

Could you please help me in the below scenario:

I want to configure such a way that ROLEOWNER should not be able to approve the role that he owns for himself.

Eg:

Role1 approver is ROLEOWNER1.

If someone/Roleowner1 raises a request to assign the ROLE1 to ROLEOWNER1 then the roleowner1 should not be able to approve as the request is raised for himself. Instead it should go to some alternate approver.

Please advise. I will appreciate your help.

Thanks,

Raj