If a template inherits another template that defines a discovery rule, it is not currently possible to customize the list of Overrides associated with that rule. (even if the inherited list of overrides is empty)

Template defining the autodiscovery rule:

Template inheriting the template above: ("Add" cannot be clicked)

This would be particularly useful in conjunction with official templates, such as the filesystem discovery rule. Some clusters may have a filesystem where tracking of metrics would be useful, but the admins do not want triggers to be generated in an enabled state. Currently there is no way to automate this through overrides, and the triggers must be manually disabled after they have been discovered. Disabling the trigger by default in the inherited template may not always be feasible, especially when the original template is used by many unrelated server clusters. (i.e. an official template)