"Start Date and Time" shows the current live time on opening the dialog, meaning that the recording you schedule will start immediately unless you change this control. You can set the end of the scheduled recording either by specifying this at "End Date and Time", or by choosing the length of the recording at "Duration". The digits in the time spinboxes are interlinked, so that typing on a digit or incrementing it forwards or backwards with keyboard up arrow or down arrow updates the preceding digits. The time controls themselves are also interlinked, so that "Start Date and Time" updates the "End Date and Time", and changing the "End Date and Time" modifies the "Duration" (and vice-versa).
- If you need to change a date forwards, incrementing either hour digit in the time spinboxes with keyboard up arrow will always increment the date automatically.
- If you want to start an immediate recording, changing only the Duration is often the simplest method because this changes the End Date if necessary as well as the End Time.
There is no default "Duration". When you open Timer Record next time, Audacity remembers the duration that was used for the previous scheduled recording.