If terminal services licensing is installed on a server, then the Terminal Server Licensing service should also be on it which you can see in services.msc.
If it's installed, then you should have a shortcut to Terminal Services Licensing in your Administrative Tools program group on the start menu of that server. Apparently it's not an mmc but rather
licmgr.exe which you can execute from start/run.
If you've installed the adminpak.msi tools on a workstation, you should also have licmgr.exe installed.