To assign to the buttons on the Honeycomb Bravo and Alpha controls, you can use the attached lua scripts. They need to be placed in your FSUIPC installation folder, and an entry added under the [Auto] section of your FSUIPC ini file to start the lua (or luas)  automatically. These have kindly been adapted from the HidDemo.lua by @spokes2112: hidAlphaButtons.luahidBravoButtons.lua ALPHA buttons greater than 32 will be on joystick #64 with 32 additional buttons provided. (0x3340)B