Torben, a caveat - please note that you can only mix different license types (i.e. Pro 15 Premium and Pro 15 non-Premium, etc.) on a single LSU if serving "Distributed" licenses.....
If you are serving Concurrent licenses, then you cannot mix license types for the same version, on a single LSU, as the LSU only checks the version of the request and not the license type (i.e. Premium, Advanced) -
The LSU simply serves the 1st available license for that version and if the LSU is serving multiple license flavors for that version, the LSU cannot control which license is served - Premium (or Advanced) vs. Non-Premium(or non-Advanced).
This is not a limitation of MapInfo Pro per se, but rather of the FLexnet licensing scheme utilized for concurrent and distributable license serving.
Therefore for that scenario (different license flavors for same version), Engineering advises users to install additional LSU's on DIFFERENT Servers -
i.e. 16.0 Premium licenses on this LSU/Server "A" and 16.0 non-Premium Licenses on this other LSU/ Server "B"....
Hope this clarifies.....
Thanks!
Dave