'''=Example 3:''' A B&B has only five Twin rooms which can be sold as twin rooms, as singles or as double rooms.=
1) Create a Twin room and set the quantity to five.
'''=Example 4:''' A hotel has three double rooms and one triple room which can also be sold as double room if all other doubles are sold.=
1) Create a Double room and set the quantity to three. Set "Sell Priority" = hide
'''=Example 5''': A villa is set up in two different properties. One offers the villa as accommodation (the room name is villa only) only the other one offers the villa as part of a package (the room name is package). =
As it is the same villa a booking for the "package" will make the "villa only" unavailable and vice versa.