Log into Macorva as an admin, then to go ⚙ Configure → CX surveys. 

In the left Category column, select the survey you would like to edit. To ask happy customers (those who rate their experience a 4 or 5) to give feedback on your Google, Facebook, and/or Yelp business pages, click Use default review sites in the middle column:

Enter your business page URLs for each platform you would like to direct happy customers to.