Located a Bug with the Custom Fields display guys.
Create custom fields in https://yourwebsite.com/admin/extension/settings/client and set to active.
Fields do display correctly in Client View when they log in.
Fields title edits do not update in the Client view of the Admin - they still display a listing as Custom Field 1,2,3,4 etc
The individual fields do populate with data from within the field when added in both the admin and clients displays, but the title of the Field remains as Custom Field 1,2,3, etc in the Admin view. This is confusing when multiple fields have been populated and the Title of the field not updated.
Hope that helps.
Cheers