Galaxy store promotion option?

Hello, I would like to know about promotion options available for watch faces in Galaxy Store. I have seen many promotions link This week’s designer, Famous designer’s work, etc, but I have no idea about how to apply? Whether it’s paid or free? Where can I get the details about the promotions? Whom to contact? Please Let me know about the details.

Thanks
Lihtnes Watch faces

look here…

and here…

https://seller.samsungapps.com/notice/getNoticeDetail.as?csNoticeID=0000005437