Associate DNS Zone Created in WHM with Account

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http://serverfault.com – I'm trying to associate a DNS zone that I added in WHM to a user so that user has access to that account. I thought I did that when I created the zone, since it seems to be associated with an account. However, the domain does not show up in that account's cpanel anywhere and I'm unable to add it as an addon domain from there because it's already in use. I don't have SSH access to the server. Is there anything I can do besides deleting that account (not an option) to associate the DNS record with that account? (HowTos)