During checkout the user is led through a procedure for verifying the order and submitting shipping and payment information. These options are set on the Checkout configuration page.
From System Setup, select Set up commerce web components > Checkout configuration.
Purchase order value used for no charge checkout
Specifies the code value for a purchase order used for no charge at checkout time.
Show the link to add a meeting to a calendar in Outlook/Exchange
When selected, a link to send a meeting request is displayed in the Public view task list so that the user can add a meeting to their calendar by clicking "Add to calendar" and then selecting which meeting to add. You must ensure that your Exchange account settings are tested and working correctly.