Yes – press Edit, add it to their places and events and pick its type. For little things, use Fun facts, where you can even make up your own question.
Where to find it
Person page → Edit, far right
Only people with the "Edit" tick.
On a phone: if the card's buttons are tucked away, press ☰ Menu first.
Still stuck? Talk to a real person: send us a message, or email support@mywholefamilytree.com