Change these by tapping the i on the top right:
Bots!
T̶w̶o three identified so far:
@fbchess
@dailycute
@holidaychallenge
Type their names (above) into a chat thread to use them!
Uber (and other transportation options soon!)
Tap the ellipsis on the bottom right to use them:
That’s all I could find for now! Let me know if you see anything else!