Facebook Page Plugin:

To get Facebook Page Plugin first log in to Facebook and copy the URL. Then, go to The Facebook developers page and get the code. Use Exai's code widget to paste the code onto your site.

Here is how to add a Facebook Page Plugin:

Step 1: First login to your Facebook account and find the link for the desired business page.
Step 2: Next copy the URL of desired Facebook business page.
Step 4: Paste link from Facebook into Facebook Page URL.
Step 5: Click on Get Code.
Note: Your Facebook Page URL will be different than the example.

Step 6: Once you get the code, copy (C) and paste it in code widget in Exai.  
Note: the code above is a sample code and your data-href will be different.

Step 7: In edit mode in EXAI, drag and drop code item to the desired location.
Step 8: Click edit icon and erase sample code.
Step 9: Copy and paste code from step 6 (C) and copy and paste code (D). Click done.
Step 10: Refresh the page (ctrl + F5) 

Note: The codes in C and D will be different and based on the Facebook business page that you chose.

Congratulations! You have added a Facebook Plugin.
Note: Only works with a business page and not a personal page.