The attachments were posted again by my colleague, Mike.
If you can't see any attached images, you can access your Community account in a private browser. It can be piled-up cache caused opened sites not to show attached files
However, you can follow these easy steps on how to add multiple jobs for one customer:
Do the same steps when adding the succeeding jobs to this customer.
You can also check out this article about tracking job costs in QuickBooks Desktop.
I've uploaded the attachments again for your reference.
If there's anything else that I can help you with, please post them here.