Auto fill data (number) between tables

[juli]

Hello,
I created a database to track a group of records (people). I couldn't figure out how to auto number the primary key to a random unique number that was less than 10 digits so I generated a list of random numbers and just use the next number off the list as I enter the next person which works OK- but I have to put that number on each table as the ID number to relate back to the Primary key and it seems that I should be able to have those auto fill with the entered number. Is it possible to have the number typed in "table 1" (people) primary key auto fill onto each of the other tables as an ID number??

[June7]

This number is the unique identifier for people table? The key will auto fill if forms/subforms are properly set up with Master/Child linking.