Exlude URLs

Is there a certain format that the url's need to be in? I've entered all of these formats and none work.

www.sagu.edu/events/
www.sagu.edu/events
/events
www.sagu/events
www.sagu.edu/events
index.php?option=com_content&Itemid=392&id=394&lang=en&layout=sagu-redux%3Aevents&view=category
sagu.edu/index.php?option=com_content&Itemid=392&id=394&lang=en&layout=sagu-redux%3Aevents&view=category

Am I missing something?