Misc. Items are Items that do not exist in your SI 2015 Catalog. You create them on a per Project basis if you want to add untaxed Items to a Project. These are generally used for things like shipping charges or travel time.
These display on SI 2015 reports and are added to the total project number after taxes have been applied to all other items. No tax is applied to Misc. Items.
When you click the [Misc. Item] button in the New section of the ribbon within the Project Editor, the following form will open:
Fill in the fields and click [Save and Close]:
In order to view/edit/delete Misc. Items from a Project, use the View button from the ribbon:
Select the Misc. Item and use the commands on the ribbon to Edit/Delete, or right-click to get options: