How to use knockout to create dropdown on click of button

Hello Friends,
I'm new to Knockout and MVC.
In my view I'm getting list of product model, which contains details like
ProductName|QuantityPerUnit|UnitPrice|UnitsInStock

My requirement is:

1. I want to show only 1 dropdown intially which will be populated with the ProductName from the model.<br />
2. Based on type of product the QuantityPerUnit, UnitPrice and UnitsInStock will be displayed in the lables.<br />
3. There is button to place extra order, which will dynamically create another dropdown of products.<br />

Here is view:

@model IList<MVC.Models.Product>

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Please place an order</h2>
<script src="../../Scripts/knockout%202.20.js" type="text/javascript"></script>
<script>
    function orderReservation() {
        var self = this;
        self.product = ko.observable(_objModel);
    }

    function ReservationsViewModel() {
        var self = this;

        self.addOrder = function () {
            self.order.push(new orderReservation());
        }
    }

    ko.applyBindings(new ReservationsViewModel());
</script>

<table>
    <tbody data-bind="foreach: order">
        <tr>
            <td>
                @*<select id="ddlProduct">
                <option>Select Product</option>
                @foreach (var _prod in Model)
                { 
                    <option>@_prod.ProductName</option>
                }
            </select>*@
                <select data-bind="value: product"></select>
            </td>
        </tr>
    </tbody>
</table>
<div>
     <button data-bind="click: addOrder">Reserve another order</button>
</div>

Any idea how to carry out this functionality??

Thanks in advance

Tags: Knockout.js, MVC3