How to add users from two OU's using LDAP?

When adding/inputting users into Openfire I am able to successfully add the base dn for one organizational unit, but we also have another OU under the same domain that needs to be added, is this possible?

Can someone instruct on how to add a second organizational unit so users can be added from that OU as well?

Keep in mind these are two OU that reside under the SAME domain.

Thanks!

do not use the OUs in the baseDN. Instead use filters to limit the results found.