Continuous Discovery and Continuous Deployment used to automatically find machine and automatically send out an agent, that is part of CCS, which has been slowly removed from the product.
You can use Infrastructure Deployment to scan your environment for machines and send out agents. but it is a manual process.
How to use infrastructure Deployment Wizard to install the Agent ?
OR
You can use dmsweep to scan you environment and deploy agents, this is a commandline method and can be put in a batch file that is scheduled to run at specific times a day.
How can I install the agent plugins using dmsweep via command line?
Let us know if that helps