If a staff member leaves your organisation and you want to prevent them from being able to log in, you should delete their User ID on the Government Gateway. If this is the only full User ID in your organisation it is essential to get the User IDs password and create a new User ID before it is deleted.
If the staff member holds an assistant ID then the user who created them should log in to the Government Gateway and follow the 'Manage your Assistants' link, to delete the assistant.
If an assistant is going to be absent from work for a long period of time, the user can change their password to restrict unauthorised access to the service. Further information can be found on the Government Gateway.