How to navigate to a different application module, say support, project, or marketing?
Everytime you login, you would automatically be switched to your "Default Login Application". To navigate to a different application/module, find the links in the upper right hand corner of your screen, just above the "Preferences", "Logout", and "Help" links. You can click on those to go to a different application.
Note: You have to have a valid role in those application module that you want to navigate to.