KiPoint - The Leading FileMaker POS System:
A little Filemaker Pro 12 tutorial showing the technique to put two portals on a layout where you can select a record in the first portal and then see records from another table related to the selected record.
Sounds complicated but just think: "3 levels of related data."
Or in other words:
A client can have multiple billings. And each billing can have multiple deposits.
We want to be able to select a billing and see the deposits related to that billing.