Don't know where to unblock plugin in Rhino 6

I tried to install a plugin(SmartTags) in Rhino 6 and it asked me to unblock rhino. I was led to a McNeel page that shows the unblock option in properties for an earlier version, which I cannot find in rhino6. I wonder if there is still an unblock option in Rhino 6? Thanks!

Hello - look on the ‘General’ tab. I think it shows up there in Windows 10.