Category with 3 Products Assigned
<form method="post" action="http://domain.com/mm5/merchant.mvc?Screen=BASK">
<input type="hidden" name="Action" value="ADPM">
<input type="hidden" name="Products[ 2 ]:code" value="Guitar_2">
<input type="text" name="Products[ 2 ]:quantity" value="0">
<input type="hidden" name="Products[ 1 ]:code" value="Guitar_1">
<input type="text" name="Products[ 1 ]:quantity" value="0">
<input type="hidden" name="Products[ 3 ]:code" value="Most_Popular_Guitar">
<input type="text" name="Products[ 3 ]:quantity" value="0">
<input type="submit" value="Add to Basket">
</form>