Following are the steps for adding an Opinion Stage item to your site:

To get the embed code, click on the Embed & Share button. From the dialog that is displayed, go to the “Squarespace” tab and click on the "Copy code" button.

Start by determining if you would like to add the item to an existing page or to a new one. You will notice a “+” sign on the top right side of the page you selected. Clicking it will display a drop-down menu.

In the drop-down menu select the Code option:

Paste the embed code you copied in step #1 above:

Click the save action on the top\left.

You're done!