Please see the video below (please note that the video is on a loop).


Please navigate to Settings->Yield Optimiser.


From the drop-down menu please choose the corresponding property.


Then press the Create New Rule.


Give your rule a name, for example "discount".


Choose the start and end date and then choose the price multiplier (hint: 90% means 10% discount, and 110% means 10% increase, etc.).


Please click Trigger  and choose the corresponding rooms within a property and then choose Apply too and choose the corresponding property and rooms.