Unfortunately if your keyboard has been advertised to be powered by QMK but is not in the list, you will **not** be able to use Configurator to customize your keyboard.
Chances are a developer hasn't gotten round to adding support or we haven't had a chance to merge it in yet. If there is no active [Pull Request](https://github.com/qmk/qmk_firmware/pulls?q=is%3Aopen+is%3Apr+label%3Akeyboard), contact the manufacturer and encourage them to add support.
Choose the layout that best represents the keymap you want to create. Some keyboards do not have enough layouts or correct layouts defined yet. They will be supported in the future.
If your selected layout doesn't match your physical build leave the unused keys blank. If you're not sure which key is in use, for example you have a one backspace key but `LAYOUT_all` has 2 keys, put the same keycode in both locations.
When you're satisfied with your keymap or just want to work on it later, press the `Download this QMK Keymap JSON File` button. It will save your keymap to your computer. You can then load this .json file in the future by pressing the `Upload a QMK Keymap JSON File` button.
**CAUTION:** This is not the same type of .json file used for kbfirmware.com or any other tool. If you try to use this for those tools, or the .json from those tools with QMK Configurator, you will encounter problems.