Select the Insert menu then select More Gadgets.
Find and open the Insert menu in the Google Sites Editor. You should see a list of available components and gadgets you can add to your site, like Images, Links, and Tables. Find the More Gadgets option, and click it. This allows you to install customizable tools such as the POWr Feedback Form to your site.
The Gadget manager will be visible. Choose Add Gadget by URL. Then copy and paste this exact URL into the box. Choose Add to complete.
Now that you've added your new, editable Feedback Form Widget to your Google Sites page, you might want to resize the Widget. Use the options in the pop-up to choose a height and width for your plugin. You can also choose to add a border, scrollbar, or title around your Feedback Form Widget, but we don’t recommend it. You will have more editing options through the plugin.
Set up POWr Feedback Form
Visit your live Google Sites web page and select the Settings Icon in the top right corner of the Feedback Form Widget.
In the POWr Editor, click Import Existing Feedback Form, find Feedback Form- and click Copy.