Hi Erik,

Is there a setting to change the amount of photos that can be used on a page post?

->Correct me if I'm wrong here, do you mean amount of photos shows in the page stream item?(seems like I can't see the stream on the page as the login access given above is not working )
Example like this?: https://www.screencast.com/t/p8kKstXOLD
If yes,Unfortunately there is no setting to set the amount of photo to be shows on the photo stream item currently.