My apologies for putting this in the wrong area of the forum. This was the first time I used the SilverStripe forum.
I figured it out. Wasn't the most intuitive process, but once I figured it out it worked OK.
I need to restrict permissions by roles/groups to a parent page and all child pages. For example, Group1 or Role1 would only have access to Page01 (a parent page) and all child pages. Group1 or Role1 should only have read access to all other pages or the ability to create a virtual page based off another page. Is this possible in the current SilverStripe security model? As far as I can tell, this doesn't appear to be possible.