In order to add a Facebook page widget to your site, you need to take a couple of steps:
1) Follow this link: https://developers.facebook.com/docs/plugins/page-plugin
On the page that opens, you need to enter your Facebook page URL (for example: https://www.facebook.com/solomonotemplate/)
Next, follow the prompts and instructions to customize the appearance of the Facebook window.
After the settings, you need to click the "Get Code" button
In the window that opens, on the tab "SDK Java Script" copy the code from step number 3, which we, later, will need to insert on the site.
2) Now let's place the widget on the site in the left column.
To do this, we will go to "Content / Pages / Blocks" and to the right of the title "Banner left 3" press "Update".
In the opened window for editing the article, click "Source".
In the window that opens, paste the URL of the Facebook page that we copied earlier and click "Save".
We now have a Facebook widget.