Submit button
Overview
Use this widget to display the button that the user uses to submit the form.
IMPORTANT: You must have a Submit button widget in your form.
After you have added the Submit button form widget in your form and opened its settings, the Submit button window appears, displaying the following sections:
Labels and content
In this section, enter the label of the button.
By default the button is labeled Submit, but you can change it, for example, to Send.
Display settings
In this section, you can select a template other than the default one that will be used to display the button on the website.
You must first have created a custom template.
For more information, see Next.js pages and templates.
Save your changes.
Advanced widget settings
To open the advanced settings, in the upper-right corner of the Submit button widget page, click 
(Advanced settings).
In CSS class input field, you can choose a class name for the button, if later you want to set a CSS style for this particular button.