You cannot edit the end of group line. You must delete the group when entering item group on transaction

Create Item Group 1. Lists> Accounting> Items> New2. Select Item Group3. Reference Start/End Lines on Picking Tickets = Yes4. Create Customer record with no shipping and billing address5. Create Sales order —Transactions> Sales> Enter Sales order—Select the item group—Save Warning: This Document has not used AvaTax Services for Tax Calculation. Shipping/Billing Address or Latitude & Longitude… Continue reading You cannot edit the end of group line. You must delete the group when entering item group on transaction