Let's say that you have two medical deduction payroll items—one is employee-paid and the other company-paid. To track the accrued amounts in QuickBooks, you create a scheduled payment for each payroll item. Because you pay the liabilities for the all medical deductions to one insurance company, each scheduled payment (and payroll item) is assigned the same vendor and account number.
When you create the payment in QuickBooks, however, you want to combine the accrued amounts for both the employee-paid and company-paid medical deductions on the same liability check. This enables you to send a single check to the vendor instead of a separate check for every item.