There currently is not any permission within Clarity to do this on the administration side. Only a Collaboration Manager can maintain the participant/Collaboration Manager list of a project.
To change the Collaboration Manager on a project you need to log in as the current Collaboration Manager. Once logged in, navigate to the team tab/participants subtab of the project. From here you can make the needed changes to the Collaboration Manager.
There is an existing enhancement request (ERQ) currently open with our Product Management team. The ERQ number is CLRT-49653 (ERQ - Project Management: "Collaboration Manager" administration available through access rights.)
Keywords: ClarityKB Collaboration Manager, CLRT-49653, Participant.