you need the latest QMB pro mod, which when installed, adds a file, QMBmaps.ini which should be located in your Missions/Quick folder. open this map and add the name of the map you want to use in QMB.
the other missions in the quick folder, for maps that you don't have, have been put in place for when you add those maps to QMB...then the missions are ready for you to play straight away. yuo can use these missions as a guideline for creating your own.
naming procedures must be strictly adhered to, and you need to have 4 flights minimum per side, any more than 4 will be AI only flights that will always be present in the mission, so best stick to just 4. the 4 flights must also be Squad 1/Flight 1-4 of a default nation; USSR/German and should be squadron None...in other words, do not select a specific squadron. that's about it.