qmk-firmware/keyboards/setta21/info.json

{
    "keyboard_name": "setta21",
    "url": "https://salicylic-acid3.hatenablog.com/",
    "maintainer": "Salicylic_acid3",
    "width": 4,
    "height": 6.25,
    "layouts": {
        "LAYOUT_numpad_6x4": {
            "layout": [
                {"label":"ESC", "x":0, "y":0},
                {"label":"F2", "x":1, "y":0},
                {"label":"\uff1d", "x":2, "y":0},
                {"label":"Del", "x":3, "y":0},

                {"label":"Num Lock", "x":0, "y":1.25},
                {"label":"/", "x":1, "y":1.25},
                {"label":"*", "x":2, "y":1.25},
                {"label":"-", "x":3, "y":1.25},

                {"label":"7", "x":0, "y":2.25},
                {"label":"8", "x":1, "y":2.25},
                {"label":"9", "x":2, "y":2.25},

                {"label":"4", "x":0, "y":3.25},
                {"label":"5", "x":1, "y":3.25},
                {"label":"6", "x":2, "y":3.25},
                {"label":"+", "x":3, "y":2.25, "h":2},

                {"label":"1", "x":0, "y":4.25},
                {"label":"2", "x":1, "y":4.25},
                {"label":"3", "x":2, "y":4.25},

                {"label":"0", "x":0, "y":5.25, "w":2},
                {"label":".", "x":2, "y":5.25},
                {"label":"Enter", "x":3, "y":4.25, "h":2}
            ]
        }
    }
}