Each form in the theme is configurable through the Quform plugin. To edit your existing forms, go to Quform → Forms on the WordPress menu. Hover the form you want to edit and click Edit. Help for the Quform plugin is available at the Quform help section.
Importing the bundled forms
We have included two already setup forms for you to use, a contact form and a register form, but you will need to import them first. See the page Setting up the contact & register forms for how to do this.