Entering time
In the Hours column, you can enter your time in Hours or Minutes, depending on the state of the time entry widget in the popup window (M for minutes, H for Hours). For example, using Hours you could enter "1.5" or "1:30". Using Minutes you could enter 90 to get the same result.

The time entry window

Alternatively, you can set TimeCache Preferences to allow time entries as start and stop times. For example, you could enter a start time of 11:00 AM and a stop time of 12:30 p.m. to get the same result as above. When entering time in this manner, you can click the A/P buttons to toggle between AM and PM entries. You can also change from AM to PM by typing A or P in either the Start or Stop time field.

The window for entering start and stop times

If you use start and stop times, be aware that the Tab key works differently in this data entry window. Typing Tab in the Start/Stop time entry window toggles between time entry fields. You can move out of this dialog and on to the next line's Client column by typing Option-Tab.

Timing your work
You can begin timing the current entry by clicking the T in the popup window, or typing ⌘-Shift-T. For more information on using the timer, see Timing your work.

Entering expenses
If you click on the Hours field for an entry whose Category is an Expense listing, you can enter the number of units if it is a per-unit expense category, or the total charge if it is a flat rate expense category.