In some situation, for example, when you roll out SCCM in the existing environment, you might need to take a staged approach deploying a large nuber of clients at the same time but not to entire fleet at once. Push method is not good because when you enable it it is attempting to deploy client to every discovered system at once.
The method we will use manually creates Client Configuration Record (CCR) file for each system we want to deploy the agent to. CCR file is a simple text file with the following content:
[NT Client Configuration Request]
All you need to do is to replace COMPUTERNAME with your discovered system name, name this file as YOURSSYTEM.CCR (this file name could be random, only the file content is important) and copy it to inboxes\ccr.box folder on SCCM site server. Few seconds later SMS Spool service will pick it up and initiate client push to YOURSSYTEM.
Now you can schedule a task which will create as many CCR files as you want in inboxes\ccr.box folder. You may also place a delay between cycles in order to minimize an impact to your network.