To modify a calendar that you have already created, go to your library and add the calendar to the basket by clicking on the calendar basket icon. In your basket, click on the three dots to the right of your calendar, select Edit, then click OK. In the editor, you can preview the calendar, change the cover text and change the order of the photos. To add more photos, click on the photo area you want to edit and select Upload more photos on the next page.
