How to setup multiple Planning Apps

We are on Planning version 11.1.2.3 500 and currently have 1 Planning Application. We would like to add the Vision Sample Application. Based on what I have seen, a new Repository will need to be created.

Any advice on how to accomplish this? Can a copy of the existing database be used with the tables dropped or is the preferred method to start with a new database? If a new database is needed, is there any documentation available detailing how the new database should be setup?

Thanks