There are two ways to go about this. For some reason, if you had to do only in Web-I level and not in the universe level follow method 1 (say the table are in disconnected systems and you have created two different universes)
The best, Simple and easy way is to do it in the universe (IDT). It's the method 2 below.
Method 1:
Method 2:
Regards,
Naras