How to Add free breakfast on booking price

Hi

 If you mean how to indicate break fast is free,

Then simply enable it under Property >  facilities and service page, then under meals enable breakfast, set it to free.

The similar setting under the Rate Plans menu , where you can only set meals are included, is technically not the same.

I would also put a note into top of the auto message template for New Reservation stating Free Breakfast Only included.

Kind regards