How to create Relational Branch in TFS 2015 - Team Foundation Server 2015 Tutorial

In this video we will learn following: 1. What is relational Branch in TFS 2015? 2. How to create relational branch in TFS 2015? 3. Why do we create relational branch in TFS 2015? 4. What are the advantages of creating relational branch in TFS 2015? 5. How to view the relational branch properties? 6. What is Parent-Child relationship in relational branches ?