How to use the calculation widget on the purchase order form?

I find your form builder delightful to use.  I am however, stuck in how to get the calculation widget to work on the purchase order form with multiple items.  The instructions I've found on the calculation widget are for payment integration.  Is my problem because there is no integration on the purchase order form?

My products include: 1) a Banquet package deal with a T-Shirt included at no charge who may order 2 or more Packages and the buyer need to indicate size on an each order; totaled on form

2) single items in the package sold separately (Banquet Dinner only) and (T-Shirt) with different prices and conditions (ie. size) for each product, who may order 2 or more; totaled on form

I'd like to be able to separate the product by package, single items, then the conditions (ie. size) for each product that is capable of totaling and sorting the submitted products and the conditions (ie. size) for each product to make the back end of the ordering process easier.

Please advise.

This thread seems to be a duplicate thread to http://www.jotform.com/answers/739885 which will be addressed shortly. Hence we are marking this thread as answered.

If you have any questions with this issue, we request you to follow-up on the other thread.

Thank you!