Want to install Change Auditor Agent in one of the Domain Controller

HI All,

Need urgent help, we have 7 domain controllers and on one of them Change Auditor is not installed. Installed agent version on other 6 domain controllers is 

I want to download the 
7.0.4362.0 agent but dont know which version to download , can you please suggest and provide the link? Also do i need to install complete change auditor or just the agent ?