qmk_firmware/keyboards/skeletonkbd/skeletonnumpad/info.json

{
    "keyboard_name": "skeletonnumpad",
    "url": "https://github.com/skeletonkbd/SkeletonNumPad",
    "maintainer": "skeletonkbd",
    "layouts": {
        "LAYOUT_numpad_5x4": {
            "layout": [
                {"label":"Num Lock", "x":0, "y":0},
                {"label":"/", "x":1, "y":0},
                {"label":"*", "x":2, "y":0},
                {"label":"-", "x":3, "y":0},

                {"label":"7", "x":0, "y":1},
                {"label":"8", "x":1, "y":1},
                {"label":"9", "x":2, "y":1},

                {"label":"4", "x":0, "y":2},
                {"label":"5", "x":1, "y":2},
                {"label":"6", "x":2, "y":2},
                {"label":"+", "x":3, "y":1, "h":2},

                {"label":"1", "x":0, "y":3},
                {"label":"2", "x":1, "y":3},
                {"label":"3", "x":2, "y":3},

                {"label":"0", "x":0, "y":4, "w":2},
                {"label":".", "x":2, "y":4},
                {"label":"Enter", "x":3, "y":3, "h":2}
            ]
        }
    }
}