Step 1: Navigate to the work order.
Step 2: Click on the completion certificate button.
Step 3: Check if there's a balance due on the invoice. It'll be indicated there.
Step 4: Send the completion certificate to the customer. You're able to do this by clicking the email icon or the SMS icon within the work order.
Alternatively,
Step 5: From within the invoice, click on invoice actions.
Step 6: Send the invoice via email or SMS. This action also notifies the customer if there's a balance due at the end of a job.
