We have actually disabled this because, I can't bear in mind where I read it (I assume it was a message by a SERengines developer), however allowing this may disrupt the Internet 2.0 engines sustained by SERengines. https://medium.com/@traveltoday0082/unlocking-the-full-potential-of-gsa-search-engine-ranker-for-seo-mastery-69fb8e100768