Chat and sessions
One session per thread
Each chat thread is a session. History, tools, and cost for that thread stay together.
Start a new session when the topic changes so the model is not carrying unrelated messages.
Find and rename sessions
Use search in the session list when you have many threads.
Rename a session from the chat rail when the default title no longer describes the work.
Two topics at once
The console focuses on one active chat pane. For two unrelated tasks at the same time, open a second browser tab to the same console and pick a different session in each tab.
Do not rely on multiple panes inside one page unless your product build explicitly adds them.
Reference: documentation