Yeah, it's that simple.
That makes it nice and easy! Thanks!
One quick follow up - How can we tell that MWG is seeing the CPU? In MWG6 you could see it it in the charts. In MWG7 i can't find a way to see if the extra CPU is recognized.
you can either connect to the appliance via console or ssh and run "lscpu" or "nproc" or inspect content of /proc/cpuinfo directly.
From UI you can create a feedback file at Troubleshooting -> Feedback (disable "Pause [...] to create a backtrace (recommended)" and you won't have any measurable impact on the MWG). The resulting zip archive contains a file called details.txt where you can find information about number of CPUs, memory and running services.