Why can't I see permissions inheritance status for folders directly beneath /Shared?

Who can change the permission inheritance status for a folder?

Does the non-inherited state get inherited by sub-folders? 

What happens when I copy or move a folder that doesn't inherit permissions? 


Why do some users still have access to a folder after I disable permissions inheritance?

Do I need a specific version of Storage Sync or other Egnyte applications to use non-inherited permissions?