Websoft BWS Facebook plugin short code for footer widget

I love the appearance of this plugin – just want I wanted for my site! However, I cannot find a way to add it to my footer widget which is where I would really like it – how do I get the correct short code to do this please.
Do I have to link the plugin up with another Facebook plugin? Very confused! https://www.beaconoflightenfield.co.uk – linking to https://www.facebook.com/beaconoflightspiritualistchurchenfield

Many thanks for any help!