Mass update Manager list in GRC AC

Hello Experts,

Please help me if there is any option to upload manager details of users in GRC 10 in Mass. We do not have any LDAP or any other data source where we can get those details through synchronous jobs.

Is there any option to update in mass through Excel sheet so that the manager detail will get auto updated in ARM ? Thank you.

Version and SP Level: GRC 10.0 SP - 20.

Regards,

Surya