Adding a new ispconfig server with web, db and mail while using dns of previous multiserver setup

Hello Everyone
i have done an installation using :
https://www.howtoforge.com/multiser...se-servers-on-debian-squeeze-with-ispconfig-3

now i want to add a new server which will be having web, db and mail, while i want dns to be used from the 1st multi-server setup.

can i be advised how to do so?

Regards

 

install the 2nd server in export mode and let the server join the existing setup.