Hello.....thank you for helping me on this problem. On my desktop mac OS High Sierra version 10.13.6 on the tabs you refer to, there is no choice of add/edit/multiple customer jobs? I did a new cust job of the last name, did a add job of the sibling coming in, but the existing sibling does not seem to have a way of transfering him to the last name new cust and the baby i added?
From the Customer Center, you can edit all jobs and customers associated. In the default view, the jobs list on the left side of the center, and then detailed information and transactions list for the selected customer or job are on the right. Use the views and icons at the bottom to manage your customers and job information.
If you have any other questions or concerns, feel free to post below, thank you for your time and have a nice evening.