Clicking on the Settings link will take you to the page of the same name. There are only a few settings you may want to alter and you shouldn't have to do so often.
Mini Month - uncheck this if you do not want the small month view to show in the user view.
Days Ahead - Set the amount of days in the future you want the calendar to look ahead for events. Set it to zero if you do not want it to display at all.
Cache Calendar Views - Check this box if you want the calendar to cache some of its pages. This can increase the speed of some views (especially month and year).
User Submitted Events - Check this box if you want to allow users to submit events.
Reindex FatCat - If you have deleted an event and it is still showing up in What's Related, check this box.
Click the Submit button when finished.