Time
 Billable? Reason
6.30am Prestart Machine
6:35am x Clearing & Stacking Timber
10:38am Crib
11:05am rough terrain Clearing & Stacking Timber
2:00pm f Stroke
Client's ego
2:30pm Crib
2:50PM yes Clearing & Stacking Timber
5:45PM Service Machine
6:12PM End of Day

BTDT as a contractor me self. This way handle multiple tasks of same type

With VBA, Billable time runs from Cell <> "" to Cell = ""

Non-Billable from = ''" to <> ""

This way, you can use Key codes in billable column to track other Business Information.

See my PM to you