This page is about the menu SETTINGS-CHANNEL MANAGER-BOOKING-COM-PROMOTIONS
You can add and manage promotions directly from Beds24.
General settings like minimum stay do not apply to promotions. All rules you want to apply need to be set directly in the promotions.
"Stay dates cannot be in the past" If you are creating an early booker promotion the start of the promotion can not be before the first date a guest could book.