Here is an example using the Tobruk QMB missions.
Tobruk QMB: http://www.mission4today.com/index.php?name=Downloads&file=details&id=5165They were built using v4.13m so anything after that version should allow the missions to play correctly.
These first two screenshots show what is in the zip file.
This is what it looks like after you place the folder in the Missions quick folder.
D:\Games\11h_Ubisoft_v413_4m\IL-2 Sturmovik 1946\Missions\Quick\Tobruk\(Mission files)Make sure there is not a double Tobruk folder or the missions will not show up in the QMB.
And if everything is done correctly it shows up in game.