You can remove admin users from your Organisation.
This can be useful if a member of your team is leaving the organisation and you wish to remove their access.
Please note: if the user has created any live opportunities (and you wish to receive a notification of any applications), you will need to update the opportunity (so that it expires) and duplicate the opportunity under your account. Admin users currently only receive notifications for new applications for opportunities that they have added. Otherwise, you will need to ensure that you are regularly checking your Applications Dashboard for any new applications.