Rate codes are used on our system to allow you to apply different pay/charge rates for the same task, and also to allow you to define your different units and methods of data entry in timesheets. You can actually define rate codes which don't relate to time, which could for instance allow you to record miles travelled within a timesheet, or number of sales calls made during a shift. When you create a task, you must always select one rate code which will apply to that task. The in which the selected rate codes for the task have been set up define how the task will appear in the timesheet.
To manage your rate codes, go to the Rate Codes & Units page from the Settings menu.