What is "last seen" and how do I turn it on?

In Chat you can see when your person was last active — "Active just now" or "Active 5 min ago" — but only if they choose to share it.

• It's off by default.
• Turn it on in You → Privacy → Share last seen.
• Sharing works both ways separately: if you keep it off, your person doesn't see your last active time, and you can still choose whether to see theirs by them turning it on.

You can switch it off again at any time.