A eHerkenning is a personal means, therefore it is not possible to change a user.
Is the registered user no longer employed?
Then click here for more information on how to cancel of a eHerkenning.
Do you want to create a new user?
As authorization manager , you can easily register a new user at My Reconi. Full instructions for creating a new user can be found on this page.
Should the above not be possible, the new user can submit a request himself via: Request new eHerkenning.