Choose Insert, then More Gadgets.
In the Google Sites Editor, find the Insert menu, and open it. You will be able to see a list of gadgets you can add to your site, like Links, Tables, and Images. Click on the More Gadgets option. This will let you add editable tools like POWr Plan Comparison to your site.
Copy and Paste
The Gadget manager will appear. Click Add Gadget by URL. Copy and paste this URL into the box. Click on Add to finish.
Adjust Height and Width
Now that you’ve added your new, customizable Plan Comparison Widget to your Google Sites page, you’ll probably want to adjust the size and shape of the Widget. Use the different options in the window to select the height and width of your plugin. If you'd like, you can add a border, title or scrollbar to your Plan Comparison Widget, but we don't advise it. There is more editing control through the plugin itself.
Set up POWr Plan Comparison
Go to your live Google Sites website and click the settings gear in the top right corner of the Plan Comparison Widget.
In the POWr Editor, click Import Existing Plan Comparison, find Plan Comparison- and click Copy.