An IntraMaps Module is configured by a system administrator and is generally set to a particular 'theme'.
The differences between Modules are the map layers. The styles of map layers and configuration of searches can often be vastly different in order to satisfy the particular theme of that module.
Users can switch between Modules by clicking it in the list. If a selection is active, switching Modules won't impact the selection unless the layer does not exist in the second Module.
Users can save which Module they'd prefer to open automatically when IntraMaps is loaded.