Fields in separate layouts
Pardon my ignorance but I'm a Filemaker novice but there is something I can't get clear in my head.
If my database comprises of several tables; product catalog, customers, quotes, invoices, each with it's own Primary Key, when I insert fields the "Specify Table" window pops up, should I be inserting fields from that particular table on working on or should they be from another table? eg when inserting fields into my quote layout should they be from the product catalog table? Sorry, I know this is a dumb question but I can't find a answer even going through "The Missing Manual" for FM Pro 10. Would appreciate some advice please.