Reference: How i can add custom button on leave application at list view side - #3 by NCP
That for, you have to add the client script for listview so please check it.
frappe.listview_settings["Car Parking Daily Sales"] = {
refresh: function(listview) {
listview.page.add_menu_item(__("Close Entry"), () => {
frappe.msgprint("Close Entry Clicked");
// add your logic
});
}
};
Also check your doctype name and set it in the script.