I've upgraded recently from "Mac OS X 3000 BC" to El Capitan. On the former, I'd been obliged to summon the local Jim Rea, to create an online/offline command in the apple menu.
In the upgrading, I lost the command... except that now it's a standard one. A bit surprised Apple do not list new features more clearly.
Sorry for the noise, everything ok now.
From what RAmeeti wrote, I guess I'll have a few more surprises when I upgrade to 10.12.