Creating a program or portfolio-level view is easy with OnePager Pro. Advanced import capabilities enable you to import multiple Microsoft Project plans into a single OnePager Pro timeline. This means that you can import several *.mpp files, or can import multiple plans from Microsoft Project Server or Project Online--all into a single OnePager document.
OnePager Pro also supports the import of integrated master schedules, for project plans that have been linked together prior to import. OnePager Pro does not require that you use integrated master schedules, however. You can import individual plans if it is more convenient.