To become a "Favourite GoGetter", your poster(s) have to request you to be his/her "Favourite GoGetter." Continue to be a good GoGetter, take initiative and be a top quality GoGetter. From doing a great job and helping someone out, you may get a request to be his/her favourite!
Remember: You have to first accept your Poster's request to be added into their "Favourite GoGetter" list.
There are two ways to accept your Poster's request:
1. You can do so by accepting the request directly from the in app notification.
2. Go to My Profile > My Posters > Favourite GoGetter Request > Accept.