Go to Products, clicking on the Pre Sales button.
Open the Choose catalog menu and select the Products List.
Then click on Settings.
Use the Rerun Wizard button to open the configuration list screen.
Move to the Schedule screen.
In this window, schedule time and date to perform the updates. Enter values in the Hourly Frequency and Start Time fields.
NOTE: to set import/update every 24 hours (ie once a day) in the Hourly Frequency section set 0 (NOT 24)
In the example, an update is scheduled every hour starting at 5:00 AM.
At the end of the wizard, click Save to confirm.