Reviewing through your description, it sounds like the option for an overview page was not selected when the specific place was created. For example, when creating a space you should see the following options:
For an overview page to be available, either the second or third option will need to be selected.
Once selected, you should see the following option available in your "manage" menu, which will allow you to customize the overview page further:
If you are not seeing some of these options available in your instance I would recommend submitting a case in your secret customer group here in the Jive Community where the next available support engineer can assist with additional investigations into your specific instance.
I have the same issue. Could you solve this behavior?
I wonder if it is a browser issue. Have you tried doing the same actions in a different browser?