Starting the SD Agent is the same as running a SD jobcheck on an agent.
The same configuration policy can be used to start the SD agent as well:
DSM\Common Components\CAF\Scheduler\Run the UAM Agent\CAF Scheduler:command line
Modify the command to:
start amagent sdagent
Seal the policy.
Note: The command "caf start amagent sdagent" starts both the AM Agent and SD Agent.