LDAP Multiple DN

Hello all,

I have users in two different OU
CN=User_Name,OU=Users,OU=EU,DC=aaa,DC=domain,DC=com
CN=User_Name,OU=Users,OU=US,DC=aaa,DC=domain,DC=com

Is it possibel to use multiple LDAP DN for users and filter the user by Members Of?

Ales