These changes were made when the Permission Manager was introduced which is part of the recent update. By default, you will see the simple control options in Cornerstone.
When you go to X > Settings > User Preferences > Advanced Mode and if it is set to Always On, you should be able to find the options that you mentioned as this will enable all of the advanced settings for all the v2 elements.
But, if it is set to User Preference, you will have to enable the Advanced Control under the Preferences option which you can find when you click on the cog icon on the left control area.
Depending on the current setting in your Permission's manager, if you will follow either of the steps above, you should be able to see the options you are looking for when you edit a page in Cornerstone.
You can find more information about the Permission Manager here:
Hope this helps.