I'm unable to delete unnecessary time ranges. Example: I'd like to have 12:00 AM to 8:29 AM go to Restricted/Closing hours, then 8:30 AM to 5:00 PM to Normal/Opening hours, then 5:01 PM to 11:59 PM to Restricted Closing hours. I've accidentally added other ranges but see no way to delete them. I did read there's a DELALL command via MMC mode. Is that the only way it can be done?