Return URL is the URL your customers see after submitting the request form. For example, http://zoho.com is the return URL for the customers submitting form from the Zoho Website.
To generate "Web Form", Goto Setup > Request Settings > Web-to-Request form. Follow the steps, generate the html code and embed the form in your website. For detailed help, refer Web-to-Request Form.
You can edit both the pre-defined and the custom widgets. The only exception being the URL value of the pre-defined widgets, which cannot be edited. To edit a widget: Rollover your mouse on a widget to highlight the edit option. Click Edit. In the ...