I want users to be able to create their own sheets, but I don't want them to be able to publish them for others to see.
Looking at the out-of-the-box security rules, it looks like I need to disable OwnerPublishAppObject. However, when I try to do this I get the message "An error occurred. The operation failed due to insufficient privileges".
I am logged on as the Windows Administrator user, who is a RootAdmin. The out-of-the-box "RootAdmin" Security Rule ("Root admin should have full access rights") is still in force.