How can I inhibit Jobs and Experts from Creating Dummy Accounts?

Each time I try to edit the settings for Jobs and Experts to show no dummy accounts in settings I end up with several blank jobs and experts . I have created my own sample expert, and job and I think the extra ones being auto generated look terrible. It is very frustrating to do this over and over again just to get one sample job and one sample expert. Please advise.
Thanks,
Robert Miller