I have a late 2012 27" i7 iMac that I use as my main computer that I would like to update to Catalina eventually once I upgrade from a fusion drive to SSD. I have a mid 2011 mac mini that I would like to keep around to run old 32 bit programs on but I don't have room for two monitors. Can I use my iMac as a monitor when using the mid 2011 Mac Mini?