You wouldn't want to, or need to paste the data. What you would do is build a subform. eg in an Order entry type form you might have an order Header for the customer name then a subform for the order details.
The Subform has an ID for each record that is equal to the order header, so when a record from the order header is selected the details are also displayed. A relationship is created between the 2 fields.
Order Header (Table)
headerID
Name
Address
OrderDetail (Table)
OrderDetailID (id fror the details)
HeaderID (ID reference equal to Header table)
Product
OrderQTY
I'm kind of rushing a little but read up on "Subforms" in Help. Repost if your still stuck and I or someone else should be able to help.
Ziggy