1) Create a Twin room and set the quantity to five.
3) Create a "Virtualvirtual" Family room and set the quantity to five.
5) Create a "Virtualvirtual" Single room and set the quantity to five.
5) Set all Dependency Levels to Ignore Sub Dependencies.
6) Set the Virtual Single and the Virtual Family to be dependent on the Twin using the LOGIC SETTING "Any Room must be available".
7) Set For the Virtual Single and the Virtual Family set "Assign Bookings" to "Unit Allocoation" "Twin"
'''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.