You can use an external URL instead of the default form URL generated by Bonita BPM Studio Form Builder.
When you specify a redirect URL, instead of the step displaying a form that was created in Bonita BPM Studio, it opens an external form hosted at the specified URL. This applies to a web site or to a local form addressed by URL. If you are using a local form, the form file must be in the webapps root folder in the application server (Tomcat/JBoss) webapps/root directory.
To configure a URL redirect: