You can install the agent on the image..
The agent is associated to the Name of the machine. So if the agent is part of the image it will AUTOMATICALLY register itself with the Endpoiint Server that was speficied during the installaiton of the agent to the image.
If you need to change the server the agent it is associated to, you can do that in the DLP console if needed. You can also do this manually, but it requires many steps.
Ronak
If this answers your question please markedit as solved.