Usually all forms are already installed. Do you want to change something? Click on 'forms' in the left menu and you will get an overview of the existing forms. In the example below, there is a contact form and a newsletter form.
Changing text in my form
Choose the form you want and click 'edit' to change something. In the 'fields' tab you can see the fields that are already in the form. To edit a field, click the setting wheel. To rearrange them, simply drag and drop.
Adding a new form field
You can add a new field by clicking on 'insert fields' and edit it just as described above.
Last but not least, you can remove a form by clicking the 'unpublish' button.