Hot Standby switchover

Hi All,

Just been trying to learn hot-standby and couldn't figure out a solution to something like this while doing a switchover:

I have three nodes where

A = Master

B = Slave1

C = Slave2

Now Hot-Standby is setup like this...

A --> B 

A --> C

Now if I will like to do a switch so as to make B the new master and have my replication look like this:

B --> C 

B --> A

Where are the steps I need for doing so?

Thanks,