Thanks! I spent a few hours on this, repeatedly reviewing the guide, but made little to no progress.
Fibery’s permission and sharing mechanisms are far from intuitive. It feels like both its greatest strength and its biggest headache at the same time.
Your response about permissions also somewhat contradicts the feedback I’ve been getting in this thread 
I initially planned to group databases under a single Space for the exact reason you mentioned—keeping databases together while using different Spaces and Views for more flexible access control.
I can’t imagine a scenario where someone managing a CRM, which naturally contains sensitive data, would want every regular user to have full visibility. The same applies to almost any type of Space—granting full control across the board just doesn’t make sense.