you can set affinity for any process on windows using START command:
start /affinity 1 app.exe (only use CPU 0)
start /affinity 2 app.exe (only use CPU 1)
start /affinity 1F app.exe (only use CPUs 0, 1, 2, 3, and 4)
yes, of course. but I need to set the affinity as 1,3,4,5,7,9,10,11