Custom Columns that appear at the top of workload pages can be customized to improve your evaluators' workflow by showing them information relevant to their evaluations. Refer to this article for an overview and step-by-step instructions on how to Create Custom Columns.
This feature is available to users with a Standard license or above. If you have an Advanced license or selected this feature as part of a Standard +2 license, evaluators have the option to edit the custom columns on their individual dashboards. Advanced License Custom Columns contains more details.
When using custom columns with a Standard license, you can set the custom columns on evaluators' dashboards. Navigate to the Your Evaluations tab on your administrator dashboard to add fields. 
Clicking the Edit Columns icon will open a pop-up displaying the columns currently selected. From here, you can add or remove columns that appear on evaluator workload pages. 