The Notify List tracks when specific users come online or go offline. You receive notifications in the Status tab.
Opening the Notify List
Use the conversations sidebar (click "Notify List") or the /notify command.
Adding Users
/notify add <nickname> [note]
Or use the Add button in the Notify List window.
Auto-Add PM Contacts
When enabled (default), anyone you exchange private messages with is automatically added to the notify list. If the list is full (50 entries), the oldest entry is removed to make room. Toggle this in the Notify List dialog settings.
Auto-Whois
Enable auto-whois to automatically look up user info when they come online.
Persistence
Register and identify with NickServ to save your notify list across sessions.