#include QMK_KEYBOARD_H // Define Layers #define _BASE 0 #define _FNX 1 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { // Base Layer [_BASE] = LAYOUT( TO(1), KC_UP, KC_PGDN, KC_LEFT, KC_DOWN, KC_RGHT), // Fn Layer [_FNX] = LAYOUT( TO(0), KC_VOLU, KC_MPLY, KC_MRWD, KC_VOLD, KC_MFFD)};