There is generally no single admin account in the CodeMeter License Central graphical user interface.
The admin privileges in CodeMeter License Central can be assigned from an existing admin to any other user. This means: a system can have any number of users with admin privileges.
By default there is one active admin user: the account "sales".
On systems hosted at Wibu-Systems the "wibu_xxx" accounts of my colleagues and me are added.
We even recommend to use at least different passwords for different CodeMeter License Central instances for security reasons, so there is absolutely no reason against different admin accounts.