zmk_mf68/app/dts/behaviors/key_press.dtsi

#include <dt-bindings/zmk/keys.h>

/ {
	behaviors {
		kp: behavior_key_press {
			compatible = "zmk,behavior-key-press";
			label = "KEY_PRESS";
			usage_page = <USAGE_KEYPAD>;
			#binding-cells = <1>;
		};

		cp: behavior_consumer_press {
			compatible = "zmk,behavior-key-press";
			label = "CONSUMER_PRESS";
			usage_page = <USAGE_CONSUMER>;
			#binding-cells = <1>;
		};
	};
};