The list on the left side of the Main Window shows all the Time Slices for
today. You can easily edit any Time Slice just by double-clicking it in the
list. Or click it once and click the pencil icon
under the list.

When you edit an old Time Slice, the Editor Bar reappears:

You can use the little arrow icons to change the Start Time or End Time for the Time Slice.
Any changes you make in the Tag Space will alter the Time Slice you are editing.
When you are done, click Save.
To delete a Time Slice, click it once and then click the minus
button
under the
list, or press the Backspace key on your keyboard.
Next: Interruptions.