Throughout the app, you will be able to use Secured Access to restrict content based on user role or target list as desired.
On the Who? screen, there will be a Secured Access area where you can choose to restrict access to the News item that is being created.
When adding/updating a feature, each feature item will have a secured access area that will allow you to restrict access to selected roles or lists.
For each menu item, you can restrict access to the item to selected roles or lists.