Make the Hiring Manager field read-only only when a Hiring Manager creates a Job Requisition

Hi everyone,
I’d like to ask if it were possible to create a rule to have the hiring manager field read-only ONLY for hiring managers who create the job requisition, NOT for those who have the 'hiring manager' role.

Has anyone implemented a similar setup, perhaps through HCM Experience Design Studio or another configuration? Any guidance would be very helpful.

Thanks in advance!