Can only view one object at a time

I’m not sure what I did. In my scene I used to be able to drop in objects like eyes and place them on the face. But now I can only view the eyes, or the head but I can’t view them at the same time anymore. Did I click some button somewhere? I’ve tried everything short of uninstalling.

I can click the multi selection check but that’s only let’s me move things around as a group.

Uncheck the isolate selection

I was thinking would it make sense to turn Isolate into a button that isolates the selected? Then things could still be selected independently