tabs and tables are two very different things.
Define a table for each of your "tabbed sections". Define a serial number field in Customer Info and use it as your primary key to link it to the other 6 tables in relationships on the Relationships tab of Manage | Database. Enable "allow creation of records via this relationship" for each of the 6 related tables. (Double click the relationship lines to open a dialog where you can select this option.)
Base your layout on the Customer Info table. On each of your tabs, put a portal to one of the underlying tables.