In the "Forms" Tab, you have several tools that will enable you to create forms within PDF Pro 10. The tools include a text field, a drop down, a list, a check box, a radio button, and a regular button.
To create the form field, click on the desired form function, and drag it across the area on the PDF document you wish to insert the field.
By double clicking on the field when it is activated, you will see the additional modifiable parameters/properties for that field. For instance, change the font, color, protect the field, make it appear when printing, or add an action to the field.