The Numbers tab is where you purchase tracking numbers and configure key elements for the tracking numbers. Only Admin users will have access to purchase, port, or configure the tracking numbers.
The Call Settings option is where you configure global settings for groups of tracking numbers. This is where you would find settings like:
The Dynamic Numbers section has the tools to configure CTM to dynamically replaced the phone number on your website with a tracking number.
** Check out the full course on CTM Core Concepts to learn more.