Photos can also be easily tagged manually after the event: 

1. Go to the menu item "photos".

2. Click on the image that should be tagged to open the detail view. 

Right click on the image to open the following window:

4. Under "Search" the list of participants can be searched for the desired person. If the participant is not on the list, he/she can be added manually.

5. Position the Nametag: by clicking on the upper left corner it can be moved by Drag & Drop

6. Position the face section (if the list of participants is used with a picture section): The face section can be drawn smaller or larger in the lower right corner.

7. Publish the picture in the desired program item (this can be selected in the dropdown in the upper right corner).