The license compliance module currently only supports per-machine licensing. We are planning to greatly extend its functionality in the future (i.e. adding per-user-licenses), but there is no release date yet.
You might enter your Teamviewer license orders with a high "# licenses" (i.e. 1000), so it won't get displayed as missing license in your compliance report.
In general,
this KB article explains how to use the current license compliance module.