Select the Insert menu and then click 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. Click on the More Gadgets option. This will let you add editable tools like POWr Payment Form to your site.
The Gadget manager will be visible. Choose Add Gadget by URL. Copy and paste this URL into the box. Click on Add to finish.
Now that you've added your new, editable Payment 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. If you'd like, you can add a border, title or scrollbar to your Payment Form Widget, but we don't advise it. There is more editing control through the plugin itself.
Set up POWr Payment Form
Visit your live Google Sites website and click the gear icon in the upper right corner of the Payment Form Widget.
In the POWr Editor, click Import Existing Payment Form, find Payment Form- and click Copy.