Can I convert Master server to media server

I have two master server MasterA and MasterB can I convert MasterB to Media serverA by some commands and changing in config files.

can anyone tell me the steps.

i just follow the following steps but in that case I got EMM server intialization fail.

1] add Server = MasterA server= MasterB and EMM server = MasterA entry in MasterB (bp.conf)

2]then run nbdemm -addhost command on master

3] then add server=MasetrA and server= MasterB in bp.conf of master

but I got the error EMM server intialization fail.

This above steps are right or I missed something.

Thanks in advance..