How to create a user's roster depending on his OU in Active Directory?

[porsevm]

The mod_shared_roster_ldap module is used as a roster.

mod_shared_roster_ldap:
	ldap_base: "OU=dep1,DC=subdomain,DC=test,DC=com"
	ldap_rfilter: "(objectClass=user)"
	ldap_groupattr: "department"
	ldap_groupdesc: "department"
	ldap_memberattr: "sAMAccountName"
	ldap_userdesc: "displayName"

How to create a user's roster depending on his OU in Active Directory?
For example,

• for user 1, take only all users in "OU=dep1,DC=subdomain,DC=test,DC=com";
• for user 2, take only all users in "OU=dep2,DC=subdomain,DC=test,DC=com";
• ...