When you need to transfer metadata ownership from one user to another for all or specific metadata records, use the the Transfer Ownership option.
How to open the Transfer Ownership page*
From the « actions on selected set » in the search, the Portal displays the following panel.
Select New Owner: Select a user in this auto-complete.
The drop down is filled with all Editors visible to you. If you are not an Administrator, you will view only a subset of all Editors.
Select group: Select one of the groups this user is a member of. Privileges to groups All and Intranet are not transferable.