I had this question after viewing Exchange Retention Policy on OU
I understand you can create an active directory OU and apply Exchange retention policies to the users in that OU by running Get-Mailbox -OrganizationalUnit "Finance" -ResultSize Unlimited | Set-Mailbox -RetentionPolicy "RetentionPolicy-Finance".
However, this sounds like a basic question, but how do I add a user to an OU other than the "users" OU? Am I not doing this correct? If I create a group under the OU, would the retention policies be applied to the users in the group?