In the main navigation, click on My Cost Tracker and you'll see the following:
By default, you'll be brought to the Submitted tab. Click on Requested, Approved, or Closed to view the other tabs and items.
Above the tabs are your filter options:
Projects
User
Start Date
End Date
After you've selected your options, click on the Filter button to apply that particular filter.
Add a new register item by clicking on the Add New button.
To approve one or more cost tracking items, select them in the grid and then click on the Approve Selected button.
When your cost tracking items are listed in the grid, you will be able to perform 1 or more related actions here.