I'm not sure what your question is, so if I guess wrong, please send another message with more details.
You can remove an entry pretty easily; just click on the grid on the bad entry. You'll see the information for that stop displayed right under the grid. You can make changes to it by typing the correct info in the fields shown, or you can delete the entry entirely by clicking the trash-can icon to the right of the stop's information.
You can also clear all blank stops (for which you haven't specified Location, Activity, Odometer, etc.) in a range of time; just click-and-drag across the time you want to clear (the click and drag must start and stop in the same duty status row, for example the Off Duty row, but the points you are clearing can be in any duty status row). If you have entered Location or other information and you want to clear a range of time, hold down the Shift key while you click-and-drag ... but be careful because it zaps all points in the range of time you clear.
Hope this helps.