How and where to change access permissions if we want authors to just add components for live copies, but don't want to break the inheritance of live copies.
When a inheritance is cancelled, AEM bascially updates the jcr:mixinTypes with cq:LiveSyncCancelled. Permissions for this cannot be managed OOTB unless you take the edit permissions which will cause users to not able to add any content to the pages as well.
I believe you need to write custom code using the oak API to control permissions for a particular node type
