Please see: https://www-secure.symantec.com/connect/forums/hide-not-show-symantec-endpoint-protection-scheduled-scan-dialog
In summary, I would an option permanantly to hide the dialog that shows up prior to Endpoint Protection running a scan on my managed endpoint. Instead, just run the scan without bothering my workflow with this dialog.
Since it's a managed instance of Endpoint Protection, this would be a policy that my IT administrators would have control over. Currently, no such mechanism exists.
This is because the dialog pops up at the worst possible time (about 90 seconds after I've logged into my computer for the morning, and am frantically working through high-prioirty emails and chats) and steals the cursor focus while I'm typing. I've endured this for two years, and it is very annoying.