Sub folders should get subscribed automatically when user subscribes to any of the main Public folder
In the current version, users will have to subscribe to each Public folders or sub folders separately. subfolders should get subscribed automatically when users subscribe to main folder
On the web client you can add a subscribed public folder to your favorites for easy access. Please add this feature to the Mac desktop version to that shared folders such as noticeboards can be checked quickly with scrolling al the way down to "subscribed public folders"