Being able to make folders in the "own flights" menu

Like many GA simmers (I suspect) I like to fly long trips consisting of many short flights -10 to 20 short flights in an extended trip is typical. At present I save them with the same file name ending in a number - to both put them in order and to keep them together in the list. It would be much better if we were able to make folders in which the flights could be made so as to unclutter the general list.