Yesterday I was expanding the capability of the data our team captures in TFS (Team Foundation Server). In doing so, we wanted to add new fields and a form to our existing TFS work items. Creating new fields, which can end up being used for reporting, was not as intuitive as I first thought, but turned out to be fairly easy! Let's take a look: 1) Open your work item type to modify, I created a copy (export) and then imported it for a test bed. 2) Add your new fields on the "Fields" tab. In the 'Ref Name' column, enter a unique name. This is the step that I couldn't find much info on the internet about. 3) Add that new field to your form (new or existing) on the Layout tab, by adding a new control. 4) Preview the form! I hope this helps someone out there, let me know if you have questions in the comments!