User reference and Views 3 and Panels 3
There are several things you can do to make your site work with Drupal a little better.

First,  it is a bit unclear how you are using your user reference field.  When I add the labels Admin and normal it sounds a bit like you are duplicating The users functionality already built-in.  Go to admin/people and look at the definition of roles and permissions.  It will allow you to define categories of users and assign them access to specific categories of content and activities on the site.

Next.  Define your view to achieve what you want, ignoring the panel.  'Taming the Beast' at nodeone.se demonstrates doing exactly what you are looking to do.  I recommend watching the entire series to understand exactly how Views works.
Note that applying contextual filters can be a little tricky.  I recommend you do not use path aliases when using them.

Only after you have your view displaying should you add the additional complexity of placing it in a panel.  Once again, nodeone has an excellent series for understanding how panels works.  Panels works closely with Page Manager and the videos show them working together.