Use the Form Designer to make a standard field visible. Fields that are hidden are only visible when you are in the form designer.
To make a standard field visible:
On the Navigation menu, click Administration » Workflow Type Configuration.
Select the workflow type for which you want to make a field visible.
Click Form Designer on the Form toolbar.
In the Workflow Category Form Designer window, select the field that you want to make visible. It may be in one of the following areas:
General tab — The field may be located at the bottom of the form in the Available standard fields that are hidden group box.
Advanced tab.
On the Properties panel, select No for the Hidden property.
To move the field to a new position on the form, select and drag both the field and its label.
Click OK.
Learn about the Form Designer toolbar
Customize form elements using the Form Designer
Work with locked, hidden, or required fields