So... I followed the WIKI info on cluster server creation and it sais to NOT use a password on cluster servers or it can cause errors... so.. no password obviously means anyone can log into my servers and play... not what I want... So again... I password protected my main one and left the one added "cluster" non password protected and you now need a p-word to log into my main but NOT my alt server... lol Here is the wiki link...
https://wiki.nitrado.net/en/cross-ark_configuration_for_ark_survival_evolved
I password protected them both and now its secure. My thought was... once you log into the server... can I disable the need to use a password to go back and forward between them in some way?