Here is a video to show you how to create duplicate tables:

How to create double surfaces 

The system can detect if group/table 1-9 is being used elsewhere. If table 1 or 9 are being used, the system will not give out the group/table 1-9.

It will also create Constant Play tables for doubles. You will want to slide your rounds on those tables if you want to use double surfaces.

The process is the same for double, triple or even quadruple tables.