how to control which license is used

I have a computer which has a SC license for Matlab and few toolboxed however the computer is connected to the network and the user also has an NNU license.

In this case, when Matlab is started on the computer, I noticed that in most cases the NNU license is taken. I would like to "control" this and "set" in such a way that this computer will always take the SC license installed.

How can I do this without disconnecting the computer from the network.

Thank you,

Alecs