FileMaker Pro 12- how to relate inventory total against outgoing invoice items?
I am new to FileMaker Pro and I wondered how do i get the inventory unit total to be related to the invoicing items?
1) I know you have to add relationships into there ut I'm not sure how. If someone could give me step-by-step instructions that would be much appreciated.
2) Also how do I add a button to use a barcode add-on script? I have added it to the external data source already.