Configure Kaltura User Secrets Through an 'acquisition like' model.
Past due by almost 10 years
40% complete
Candidates of objects that can have Kaltura key properties (in order of precedence)
Plone user
Plone Group
Plone Folder-ish object
Plone Site
If no keys found through this acquisition chain, default to add-on configuration, which should show a big-red-nasty-error if these aren't configured.