Together with my LAGO FSE, Abacus' EZ-Scenery, Runway3, and AFCAD (for positioning my VOR and NDB beacons) scenery design programs, I often design my own private runway Airstrips, complete with various objects, sometimes in the middle of nowhere!.
I place them into my Scenery Add-On Folder...as you do...and they work fine...;)...!
How does one generate ones own ICAO airfield code, together with the name for them, so that they appear in the drop-down list under "World > Go to"...?
(They are located at particular Compass N/W locations).
At present, because they are not part of the existing ICAO code locations, I can only load them via my "Saved Flights" list.
(It has been achieved with the "SIMV" ICAO Code for locating the Simviation Airfield)....
...how was this done?....

As an example: One of my designed airstrip runways, objects, NDB beacon, boating lake, and camping site, is located on the Pacific Coast, at Point Reyes in California.
How do I give this airstrip its own ICAO code to appear in the Flight Sim list of ICAO codes and Airfield Names for quick access..?
I have these little Airstrips dotted all over the place!
It obviously must not conflict with any existing ICAO codes and Airfield names...!
...any advice will be rewarded with a Chocolate Cookie...(or maybe, even three!)...

Thank-you, Chums...

F....G-BPLF...FS 2004... 8-)...!