When Flair Room Sense is activated, you will also have the option to set Quiet Hours. Quiet Hours are located in the "Mini Splits, Window Units, and Portables" settings. Go to Home Settings->Mini Splits, Window Units, and Portables, expand the device, and set the Quiet Hours for that device. Quiet Hours are set on a per-device basis.
During Quiet Hours, Flair will not regulate the temperature or send any commands to the device. You may want to set Quiet Hours in the evening, or during nap time.