How To Enable Authentication For LDAP Users
From Secure Web Gateway
You can setup Kerberos SSO or you can enable basic authentication for LDAP user
Access the SafeSquid User Interface
Go to configure page on top right corner of the interface
Then on left side go to Application Setup ==> Access Restrictions
you will see that the in Global section by default SSO is enabled
Make SSO disable
Then Move to the Allow list subsection and create the policy same as below
Read more about Authentication with kerberos SSO