Notification banners and alerts on dual displays
I have a mid-2011 MacBook Air connected through HDMI to a 24 in 1080p Asus external display. Notification banners and alerts will only show up on the Air display, and I would prefer to have them appear in the upper right corner on both displays. I haven't found any information through numerous Google searches, or among other Apple support discussions. Is there a setting or way to do this?
Thanks in advance
MacBook Air (13-inch Mid 2011), OS X Yosemite (10.10)