Welcome to Adobe Forum,
I understand that you are refering to CC Team purchased for 2 seats under the Adobe ID provided here.
Please refer to http://helpx.adobe.com/creative-cloud/help/manage-creative-cloud-teams-membership.html#Man age Plan Administrators
Please let us know if it resolved the issue.
I have the same problem, and still no solution. The facts are :
* Mr A. buys a licence for Adobe Creative Cloud for Team, 3 users. => A is "main" admin
* He grants B to be administrator. B is "admin", not "main admin".
* A is leaving for another job, and wants to grant "main admin" rights to B. How can we do that ?
The solution is not included in the link you provided before. Any help would be fine.