On macOS, we can add another JVM while having old versions of the JVM still installed.
How do I point IntelliJ 2017.2 to another version of my JVM?
I can find no such setting in the Preferences window.
Preferences > Build, Execution, Deployment – Nope.
Preferences > Build, Execution, Deployment > Compiler – Nope.
Preferences > Build, Execution, Deployment > Compiler > Java Compiler – Nope.