This might help you - https://help.market.envato.com/hc/en-us/articles/204921664-AudioJungle-Authors-FAQ#featuredratingreferrals
The above applies to items more so than the featured author spot.
Featuring items is a joint effort between different teams, e.g. Marketing, Quality, Review, and different features may be suggested, selected and set as such by people on those teams.
One thing we’ve learned over the years is you can never please everyone. Some authors clamour for more variety, to expose different styles, Other authors clamour for top commercial potential items not to “waste” slots. Some authors say give promising newcomers exposure, while some say don’t ignore your established non-elite veterans etc etc… So there’s a fair bit to juggle to maintain a balanced community directive. Everyone has a strong opinion so at the end of the day, there are some hits, some misses, depending on who you ask, but there’s only one slot at the moment.
Cheers