don't know how much this helps, but here it is anyway.
i have used dataassist wizard to create a simple set of pages based on member table.
to display the naics for each member, i added a new recordset to member details, with a repeat region, to show all of the naics for each member, and show nothing if no rows were returned.
(notice how this recordset is filtered by memberid)
you also need to modify the members table so that member id is autoincrement. otherwise you will not be able to add new members successfully.
in order to add/edit naics for each member, you need to create a link from the naics results table.
Sorry, it is difficult to explain, and not something I would use a wizard for. Hopefully Jason or one of the others at WA can steer you better.