I manage several Macs, and from a security point of view i would like to make sure they where always up to date with the latest patches for their version of OSX.
I understand there is an inbuilt tool in the "mac app store" application to do this.
My concern is that the auto update tool would auto update these machines to the latest version of OSX. eg. Sierra. Because we have to run some mission critical software on a few machines we can not upgrade past Yosemite at the moment so i wouldn't want the auto update to upgrade OSX. Is it possible to get the auto update to upgrade applications and patches, but not OSX itself ?