You can attach items from a supplier invoice or a stock order.
1. Firstly select the star button on the top right hand side.
2. Then select “Attach To Invoice”
This is what it looks like from a supplier invoice:
This is what it looks like from a stock order:
3. Now select the items you would like to attach to the invoice and press the green tick
4. Select the invoice you would like to attach the items to