Setting up permissions on Table data provides extra protection for sensitive information! For example, if you want to show all content to all users in your app you don't need to set any permission settings in Kozmik. However let's say you want to show contents to only the row owner, you need to select the "Only the Row Owner" option on the "Who can view the data" choices in the table settings.
This means any user can view or edit data in the table.
This means that only the record creator that exists in the Users table can view or edit any data in the table.