I've been looking all over the documentation but can't find if there is a way to do this. Say I have multiple machine-specific settings which are overriding a number of policies.

Is there a way to selectively clear overrides that may be impacting a specific policy instead of clearing all machine-specific settings? I am sure that in most cases I can go to the setting itself and make the necessary changes. However, there are some options, like the Agent menu, that once implemented at machine-level, even if totally disabled, remain machine-specific (in this case, the fact that no menu is to be displayed for example) and won't go away until the overrides are cleared. 

I know this is a very specific scenario, and I have not run into this issue myself, but I do wonder if it is possible.