Need help to configure F5 Authentication using Windows 2012 Radius server

Assuming you're referring to BIG-IP admin users, have a look at

K17403: Configuring RADIUS authentication for administrative users

https://support.f5.com/csp/article/K17403

K15763: Troubleshooting RADIUS authentication for BIG-IP administrative users

https://support.f5.com/csp/article/K15763

https://clouddocs.f5.com/cli/tmsh-reference/latest/modules/auth/auth-radius-server.html

Thanks Kin,

We need two user groups, one is admin and the other one is read only user group.