You may need to make edits to the start time of a workout in your heat schedule.

To do this, select "Scheduling" from your organizer dashboard, followed by "Time Blocks".

Select the time block you need to make a change to (circled in red in the screenshot below).

A window will pop up that allows you to make changes to the start time, event duration, transition time between heats, whether or not you want to swim the lanes, and how many lanes are available.

Any changes you make here will only apply to this division of the selected workout. To change the parameters for all divisions of a workout, check out this article on updating workout parameters.