Leave all other settings set to the defaults and map this room to the channel.
'''Example 2''': You have 9 double rooms and guaranteed channel A and 2 rooms up to 5 days in advance
Room 1 Channel Allotment:
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Quantity=2
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Sell Priority = hide (to hide from booking page)
In SETTINGS-> PROPERTIES->ROOMS->DEPENDENCIES set "Include Bookings" = Last Minute Room
In the rate set "Min Days in Advance" = 5
Room 2 Last Minute:
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Quantity=2
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Sell Priority = hide (to hide from booking page)
In SETTINGS-> PROPERTIES->ROOMS->DEPENDENCIES set "Include Bookings" = Channel Allotment
In the rate set "Max Days in Advance" = 5
Room 3 All Channels:
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Quantity=7
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Sell Priority = hide (to hide from booking page)
Room 4 for Channel with Allotment:
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Quantity=9
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Sell Priority = hide (to hide from booking page)
In SETTINGS-> PROPERTIES->ROOMS->DEPENDENCIES set
"Requires Availability" = Room 1 Channel Allotment, Room 2 Last Minute, Room 3 All Channels (in this order)
"Combination Logic" = Sum of all bookings
"Assign Bookings to" = First available dependency room
Room 5 other channels:
In SETTINGS-> PROPERTIES->ROOMS->SET UP set Quantity=9
In SETTINGS-> PROPERTIES->ROOMS->DEPENDENCIES set
"Requires Availability" = Room 2 Last Minute, Room 3 All Channels (in this order)
"Combination Logic" = Sum of all bookings
"Assign Bookings to" = First available dependency room
'''Note:''' The virtual room feature works only for online bookings. If you add bookings manually place them in your "real rooms" not into virtual rooms.