Notifications are structured around Work Items so all the notifications related to a specific Work Item will be shown in one Slack Thread. The first notification of a Work item will be sent as a regular message to the configured notification channel, but further messages about that Work Item will be aligned to a Thread which opens from the first notification message.

For example, here you can see a notification about a Work Item creation and an update notification about the same Work Item:

On the right side you can see the Tread which only contains notifications about that specific Work Item.

Notifications sent to a Thread will also be posted to the parent channel too.

These Threads can be accessed from Codebeamer too. Go to a Work Item and select the ChatOps Channels option from the dropdown menu as you can see on the next screenshot:

Note that this option is only available if the integration features are enabled and your Codebeamer user has the Rest / Remote API - Access permission.

You will see a Jump to Work Item's Message Thread if there is any Threaded notifications about this Work Item.