How can I ensure that data is entered in the 2nd table (non-public) in a 1-1
relationship? Because the join is 1-1, it is presenting a problem when data
is not entered in 2nd table. In this situation, Access will show all records
in table 1 (public data) . When I query tables 1 & 2 together, the records
that do not have data in table 2 are not in the results.

I need a way to automatically enter a data element in table 2 working around
the human error problem.
Thanks.