https://apple.stackexchange.com/questions/380421
Domanda
Any idea why the "Applications in last 12 hours" is disabled in the "Activity Monitor"?
At one point it appeared briefly -- but after days of using it, it has since disappeared.
Using macOS 10.15.2. Many thanks.
Soluzione
It's only available on the Energy tab.
I can just tell from your pic, you're on the Disk tab.