Select the Insert menu then click More Gadgets.
Find and open the Insert menu in the Google Sites Editor. You will be able to see a list of gadgets you can add to your site, like Links, Tables, and Images. Select More Gadgets. This lets you add editable tools such as the POWr Event Slider to your page.
The Gadget manager will be visible. Click Add Gadget by URL. Then paste this URL into the field. Select Add to finish.
Now that you've added your new, editable Event Slider Widget to your Google Sites page, you might want to resize the Widget. Use the different options in the window to select the height and width of your plugin. We don't recommend it, but you can insert a scrollbar, title or border to your Event Slider Widget. You'll have more control while editing right through the plugin itself.
Set up POWr Event Slider
Visit your live Google Sites web page and click the settings gear in the upper right corner of your Event Slider Widget.
In the POWr Editor, click Import Existing Event Slider, find Event Slider- and click Copy.