I'm hoping someone out there can assist. One of my pilots wants to know which of his Team is interacting more / or conversely not interacting by looking at File Opens. So if he places a file and instructs everyone to look at it - can he report on that, to see who has or has not opened the file?.
I do not know a way to do that, you can only see who has access in the sharepoint environment.
There is a feature coming in june if I remember right, where you have access to more ways to analyse activity in one team. Sorry for not providing the link, but I can not find it right now. Maybe have a look in your admincenter messages.