Add +1 Button to Sidebar
- Sign in to your Google Site
Use the More button then Manage Site (alternatively you can use the keyboard shortcut g then m) and go to Site Layout
At the bottom of the Sidebar section use the Add a sidebar item link
Once the Choose a new page element dialogue box appears scroll to find the +1 button and use the Add button
Move the the place-holder for the button up or down, if you wish (click and drag with your mouse)
Use the Save button (next to Manage Site) and your +1 button will appear in the side bar
Notes on Google Sites +1 Button Sidebar usage
When you add a +1 button to the site sidebar then Google Sites will make it appear automatically on all pages. When a visitor uses the +1 button it will +1 the page the visitor uses it on and not just +1 the site. You cannot specify the format of the +1 button but you can in the page content version of the +1 button, see below.
Add +1 Button to Page Content Area
Sign in to your Google Site and navigate to the page you want to add the +1 button to
Use the Edit Page button (alternatively use the keyboard shortcut e) then the Insert menu and choose +1 button
Once the Insert +1 button dialogue box appears choose whether to Show the click count and the Size, then use the Save button and the +1 button will appear.
If you click on the +1 button while in the editor the +1 button's attributes pop-up appears and you can choose to alter its:
Use the Save button (top-right) to save the page and your page will display the +1 button.
You can get this feature now on stand-alone/consumer/personal Google Sites with their visibility set to Public and Google Apps domains with the Rapid Release track enabled.
+1 Button - Page Content Area - Sizes
+1 Button - Small
+1 Button - Medium
+1 Button - Standard
+1 Button - Tall