How can I tag people in my online photos?

To tag people in your already uploaded photos on your family site, go into your family site into Photos.

Then go into Tag people.

Here you will see that your photos were scanned for faces, and whatever faces were detected in your pictures, are grouped together for each individual person detected.

You can then choose which photos are indeed the same person, and label them with a name. Press apply, and then move on to the next person!