Display Suite Custom Wrappers and Custom Classes Tabs Not Appearing in Manage Display I am using Display Suite layouts for some of my pages. I want to add in some custom classes for the regions. However, the custom classes and custom wrappers tabs are not appearing on the Manage Display screen for my view modes. I am able to add custom classes on the Display Suite Custom Classes screen, but cannot apply them to the display, as the tabs are not there.

Am I missing something? I have seen videos where they appear for other users so don't know why they are not appearing for me. 

Below is a screenshot showing the missing tabs.



I want to basically target the view mode as a class on the page. At the moment, it is only inserting the layout I have selected as a class, so if I am using the same layout for different view modes I can't differentiate between them if they are for the same content type.
Two possibilities come to mind.

1) Have you saved since you selected "One Column" as the layout? The configuration options change once you select something other than -None-

or

2) Have you checked that you have the correct Display Suite permissions? Namely, 'Administer classes' and 'Administer fields'