Enhancement Request to Adjust or Deduct Additional Charges in Invoice Creation

Suggestion: Introduce an option in myBillBook accounting app to adjust or deduct additional charges directly while creating an invoice, allowing users to reduce the final invoice amount as needed.

Root Cause: Currently, there is no provision to modify or reduce additional charges once applied during invoice creation. This limitation forces users to manually adjust totals or avoid using additional charges altogether, leading to inconvenience and reduced flexibility in billing.