For information on how to enter time see Timesheet Entry
This video covers how take the time that was recorded (and other items recorded against a matter) and put it in an invoice for that matter. To learn more about how to record time and the options concerning time recording see the first video on this page: Time Recording, Time Billing
Time Billing - The Key to KPI
If it is important to track the return on staff time, we do recommend using time billing even when charging a flat fee - the invoice can be adjusted to Pro-rate the fee between the invoiced time entries.
This does not need to affect the payment schedules in the pipeline as they can be linked to the invoice created.