If your booking is on a stand-alone property (unit), you are unable to move bookings on Lavanda to another property due to limitations defined by Airbnb. See this Airbnb article for more information.
You can relocate guests if they booked a unit which is in a unit type. You may do this from the multi-calendar. Please note it is only possible to move current and future bookings.
Navigate to the Multi Calendar
Select a booking
Under More actions, you will see Move booking
(Note: This will not be visible if the unit is not in a unit type, with open units to move to)
You can now select the unit you wish to move it to