These features are selected by participants in the staff Critique Team's Mentorship Flights, to acknowledge the time and effort spent during this critique training/learning process. More information on the Flights system can be found on this page.
If you are interested in signing up for a Flight, please visit the Ideas Critique forum and look for a post at the top of the thread listing titled, "Want to earn Greenlighting Privileges and/or choose next month's front-page features?".
In the event that no Flights are run for a given month, due to consideration for vacation seasons, exam sessions, ongoing contests, or other circumstances, staff will select the feature. Additionally, winners of sitewide contests often receive front-page feature slots as prizes; these special features are given the "prize-feature" tag.