Free the cookie plugin and Google Analytics

I am trying to use the free the cookie plugin but am not sure how to use it fully with Google Analytics. I have got the banner appearing and it disappears as expected when clicking on the allow button. My problem is that I don't understand how or where to put the Google Analytics code into the OnConsent option.

Can anybody help me by supplying the code needed that I just need to then add the Google Analytics code to?

Any help would be greatly appreciated.