On your member home dashboard, under ACTIVE POLICY section, click COVERAGE, and adjust the level of new coverage you want -- the price will update live to show you the difference.

To add protection for special items like your expensive bicycle or wedding ring, add and name it under the ‘Enhance Your Coverage’ section. 

Click ‘Review & Confirm’ to be taken to the billing confirmation page to finalize your changes.

To change your name or contact info please see this answer.