What are the functions of the control panel buttons on the 2-in-1?

關於我們 <svg class="icon icon--down" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"> 主動 - 向下 <path d="M5.66357 9.36982L6.33625 8.62988L11.9999 13.7787L17.6636 8.62988L18.3362 9.36982L11.9999 15.1301L5.66357 9.36982Z">

支援 <svg class="icon icon--down" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"> 主動 - 向下 <path d="M5.66357 9.36982L6.33625 8.62988L11.9999 13.7787L17.6636 8.62988L18.3362 9.36982L11.9999 15.1301L5.66357 9.36982Z">

購物 <svg class="icon icon--down" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"> 主動 - 向下 <path d="M5.66357 9.36982L6.33625 8.62988L11.9999 13.7787L17.6636 8.62988L18.3362 9.36982L11.9999 15.1301L5.66357 9.36982Z">