Dear Ianian
CRED plugin is front-end editor, not for filtering displayed data.
Please use this "Parametric Search" in Views plugin.
Adding Parametric Search to Any Listing http://wp-types.com/learn/filter-content-with-parametric-search/
Please let me know if you are satisfied with my answer and if I can help you with any other questions you might have,
Regards
Marcin