From the dashboard, select Touchtone Surveys > Schedules.
To create a new schedule, click the green "New Schedule".
From the following screen, fill in the needed information: Phonelist, brief description (for your own records), select a survey, select a date to run the survey, select a timezone, select the start and end times.
Select your phone list from the dropdown on the right.
Once done, click the green "Submit" button.