Just to add:
https://support.f5.com/kb/en-us/products/big-ip_apm/manuals/product/apm-authentication-single-sign-on-11-5-0/2.htmlunique_757404569
In the Admin Name field, type a is case-sensitive name for an administrator who has Active Directory administrative permissions.
APM uses the information in the Admin Name and Admin Password fields for AD Query
. If Active Directory is configured for anonymous queries, you do not need to provide an Admin Name. Otherwise, APM needs an account with sufficient privilege to bind to an Active Directory server, fetch user group information, and fetch Active Directory password policies to support password-related functionality. (APM must fetch password policies, for example, if you select the Prompt user to change password before expiration option in an AD Query action.) If you do not provide Admin account information in this configuration, APM uses the user account to fetch information. This works if the user account has sufficient privilege.