Do you want to have all the modules initialized during application startup or some later point in time?
If you are trying to do so during application startup, the bootstrapper should handle this for you. Take a look at the Modularity with Unity for WPF Quickstart or the StockTrader RI for examples of how this works. There are also docs describing how
modularity works as well as docs that explain in detail how the quickstarts are put together.
If you are trying to do so later in the process, the ModuleMananger has a LoadModule method that could load the modules individually on demand. You may also be able to re-run the Run method on the module mananger, but this may have unintended consequences.
Let me know if neither of these approaches help.