Hi Fredrik -
If I'm understanding you correctly that you want to swipe horizontally to change pages, yes, that is the way Mag+ works by default - you will see it in every Mag+ app. The way to do that is to use a new InDesign document for each page (we call them verticals because you can swipe vertically and have multiple "pages" vertically on a single one). Then you use the Production Tool to assemble the verticals into an issue. Here's an article that explains the Mag+ architecture: http://support.magplus.com/entries/21731228-The-Mag-Process
Hope that helps.