Select the Insert menu and 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 and select the More Gadgets option. This will allow you to add customizable tools like POWr Twitter Feed to your site.
The Gadget manager will be visible. Choose Add Gadget by URL. Then add this exact URL into the field. Click Add to finish.
Now that you've added your new, editable Twitter Feed 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 decide to create a title, scrollbar or title around your Twitter Feed Widget, but we advise against it. You’ll have more editing controls directly through the plugin.
Set up POWr Twitter Feed
Visit your live Google Sites website and select the Settings Icon in the upper right corner of your Twitter Feed Widget.
In the POWr Editor, click Import Existing Twitter Feed, find Twitter Feed- and click Copy.