This guide will show you how to group items on an invoice and then discount them
Start a new invoice as normal
Make sure all your items are added to the invoice
Select the group drop down on the left next to each item
Assign them to a Group by selecting the number of that group
Once all items have been assigned a group double click on the group number
A window for Group Adjustment will pop up
From this window you can adjust the subtotal for the group
Select Enter Amount and enter the desired amount for the whole group
Select Enter Percentage and enter the percentage off the whole group
Select either Retail Price or Current Price
Select Update and Yes to the confirmation
Continue with the invoice as normal
Note: When you print the invoice you will see the items grouped together with their price