Payroll IIF Capabilities

I've worked with QB IIF for many years from a developmental liaison as well as support; however, some time has past and I am trying to regain the capabilities knowledge.  I had numerous clients that imported payroll detail including customer, job, and class detail but I cannot recall the file header format for the customer/job.  I believed it was Name but, the employee detail is required as well for this journal entry and as I recall the Employee Name would go in the name column.  After reviewing the IIF file docs on the qb site, I've only found class as an option.  Any assistance is greatly appreciated.  I have been looking for a job costed sample iif journal entry file - employee by employee pay check detail with customer, job and payroll item detail.