Using Comments + plugin with Upfront Theme

I have a page on the website I am developing as a memorial for my grandfather and the work he accomplished. I am wanting this page to be like a “Guest Book” for the site where people can leave a comment or memories of him. I would like to use the Comments + plugin so that people can use any of their social media profiles to leave a message on the page. How do I integrate this? Thank you for your help.