In the Customer Center, use View menu > Re-Sort List. Also, make certain it is in Hierarchical view, not Flat view.

Resolution for 'Add Job menu item issue: 'I can’t add a job to a customer. The Add Job menu item is grayed out, any ideas as to why?' available: Yes.

The Add Job menu item issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the Add Job menu item issue yourself by looking for a resolution described in the article. If it is a complex Add Job menu item issue or you are unable to solve the issue, you may contact us by clicking here or by using other Add Job menu item support options.

For more information about resolving issues related to Add Job menu item in Quickbooks/QBO or to get support for the issue 'I can’t add a job to a customer. The Add Job menu item is grayed out, any ideas as to why?', click the link below: