I have setup Joomla 3.7.5 on Wampserver locally on my PC. Unable to see many module positions in the template preview. I can only see a few at the top and a few at the bottom, not all the positions as they show up when you try to setup a module. I have also setup the Quickstart but it has the same issue. There are no module positions in the middle. There isn't much documentation also about it.