Embed your form with an iframe
In order to publish your form on Google sites, you'll need to embed it as an iframe. Login into your Google Site, choose Insert → More Gadgets and then select Include Gadget (iframe)
Click on Select at the bottom of the pop-up that comes up and then you'll be asked to enter the public URL of your form, which can be found on the Publish page.
Once you've completed the "Add a gadget to your page" pop-up, click OK and your form should now be visible on your site.
Embed a Workflow
With Google Sites, you cannot embed a workflow link as an iframe. Instead, you will need to embed the public link to your first form as outlined above and add a custom redirect link to your secondhttps://help.formassembly.com/help/article/link/thank-you-page-or-redirect#redirect-to-url form. This can be done on the Notifications page.
If you are using more than two forms in your workflow, you will need to add a custom redirect link for each form in order for the user to be automatically directed to the next form.