This tutorial will show how to add a Pin It button to your forum.
First we need the code for the button itself:
You can add this code to an announcement, in the homepage message, in a widget, etc.
You can change the design of the button here: https://business.pinterest.com/en/widget-builder#do_pin_it_button . Also you can pick if you want a button, a button with a counter, or a code that lets you to hover over a image which will show the Pin It button.