Hi there, seem it is impossible to add the Object Media representations (ca_object_representations) in the viewing editor UI screen.
First I tried to create a new UI editor and found that the "object media representation" item was just not available on the "screen content" table. that seem a little odd but maybe there was some limitations I did not understand.
Then I tried to remove it from the "Standard object editor" (the only place it worked) and once saved, it permanently dissapeared from the screen content table, which is VERY strange.
In any case, it feels like a bug or maybe I am just too noob with providence but I'll be glad if someone can help me 🙂
Jimbo