You can build your Form by adding the following elements to it:
If you hover your pointer over a field in the Form's preview box you will see up/down arrows; click as appropriate to order your fields. The same hover menu also offers a delete option.
If you hover your pointer over a field you will see a “Required?” button; click this to toggle the required state of a field. If a field is required, the preview will show it lit purple with an asterisk to the right.
Once you have finished building your Form, click Continue to move on to Step 2: Messages.