Under some modules are application groups that display in the middle pane when a specific module is selected. Note that not all modules have application groups contained in them.
When you click an application group, the list of applications that belong to that group displays on the next pane on the right.
In the example above, when the Company Calendar group is selected, applications that belong to that group (for example, Manage Fiscal Years, Manage Accounting Periods, Manage Subperiods, Manage Alternate Fiscal Year Mapping, and Close Periods) display on the right-hand pane.