Restart switch on custom exe package

I am in the process of testing the deployment of windows 10. I have it working based on the documentation on how to deploy it. I noticed tho that once it is finished it the pc automatically restarts. I am using the /quiet switch but what switch could I use to either force a reboot after x amount of time or give some kind of warning before the pc just restarts once it is finished deploying. Ideally I would like the pop up box that shows up when ever patches or other software has been installed. Is there some kind of switch I can add to the deployment to delay reboot for some time or give the user warning with a count down till it force reboots?