I finally figured this one out and it's embarrassingly simple. You can actually do everything you need via commands run inside the dcu-cli.exe file. Here are the commands I have run to set everything we need and then to lock down the settings for end users:
Code Select
"C:\Program Files\Dell\CommandUpdate\dcu-cli.exe" /configure -scheduleDaily=15:30
"C:\Program Files\Dell\CommandUpdate\dcu-cli.exe" /configure -scheduleAuto -scheduleAction=DownloadInstallAndNotify
"C:\Program Files\Dell\CommandUpdate\dcu-cli.exe" /configure -installationDeferral=enable -deferralInstallInterval=4 -deferralInstallCount=5 -systemRestartDeferral=enable -deferralRestartInterval=4 -deferralRestartCount=5
"C:\Program Files\Dell\CommandUpdate\dcu-cli.exe" /configure -locksettings=enable