Web app Select the shift for which a time tracking should be created. In the window that opens, click on the Add button in the Tracking row on the right. Now you can enter the start and end time as well as the break. Then save the entry.
Mobile app Select the shift for which a time tracking should be created. Then click on the Add-button and enter the start and end time as usual as well as the break. Then save the entry in the top right of the bar.