You can have up to four daily prices per room. If you are using extra offers (SETTINGS->PROPERTIES ->OFFERS-> OFFER 2-4) to offer specials you can also use daily prices for your offers.
*General rules for daily prices are set in SETTINGS->PROPERTIES ->ROOMS->DAILY PRICES
*To define if a daily prices can be overridden by another price or rate or not go to SETTINGS-> BOOKING RULES ->DAILY PRICE STRATEGY.
*If you want to send Daily Prices to booking channel activate this in SETTINGS-> BOOKING RULES ->DAILY PRICE STRATEGY.
*Additional rules like higher minimum stays check-in/check-out allowed can be set in the CALENDAR.