Allow me to provide you with some information and guide you on what to do, ShellyS.

Ideally, once you create transactions to certain job under a specific customer, you'll be able to see them when you select the customer name. I've added screenshots for your guide:

You can drill down each transaction and double-check if you're creating the transaction on the right job under that specific customer for the transactions to show. 

Also, as you can see, I've set the other job as inactive. When you go to the Customer Center page, the other may not show up on the list, but it will still show up once you run a report. Thus, it' may not be necessary to set a job as active since the job will still show up whether it is active to inactive. 

Additionally, you'll want to create a group of customers that matches criteria like location, customer type, or status. Please go through this article for your guide: Create A Customer Group In QuickBooks Desktop.

Please get back to us if you have any concerns about customers and jobs. We're here to further assist you anytime.