So my APIAreaRegistration needs to changed?

using System.Web.Mvc;

namespace WebSite.Areas.API
{
    public class APIAreaRegistration : AreaRegistration
    {
        public override string AreaName
        {
            get
            {
                return "API";
            }
        }

        public override void RegisterArea(AreaRegistrationContext context)
        {
            context.MapHttpRoute(
                "API_default",
                "API/{controller}/{action}/{id}",
                new { action = "Index", id = UrlParameter.Optional }
            );
        }
    }
}

to something like this?

public static void RegisterRoutes(RouteCollection routes)
{
    var Route1 = routes.MapHttpRoute
    (
        name: "ClientApi",
        routeTemplate: "client/{controller}/{param1}"
    );
    Route1.DataTokens["Namespaces"] = new string[] {"Client"};

    var Route2 = routes.MapHttpRoute
    (
        name: "OrderApi",
        routeTemplate: "order/{controller}/{param1}"
    );
    Route2.DataTokens["Namespaces"] = new string[] { "Order" };
}

If yes, how do I do that for areas or should I change the Global.asax?