For a job charged on a time basis (number of hours worked), you'll want
your Item list to include the hourly rate you charge for each service. If your
jobs typically involve the work of more than one staff member and you bill
their time at different hourly rates, you'll want to set up your Item list
to include those rates, by using subitems, as described in: Set
up service items to track several fees.
You have two options for tracking your time in QuickBooks:
Enter your time directly into
Use the Timer and
import your Timer data later.