I am trying to find an elegant way of subtotalling costs on quotes and orders.
For instance a service may consist of an initial setup charge an ongoing monthly charge and an annual subscription.
Ideally I would like three subtotal fields to detailing totals for the following charges for products with the following unit type.
One off
Monthly
Annual
I have tried Rollup and Calculated, but as the unit type references another table, I cannot query.
Any suggestions would be welcome