Open Trio's panel from the right-side menu, and click on Integrations.

Find "Slack" among the integrable apps, and click Connect.

After connecting Slack, you will have to create event notifications. You can do it at the moment or you can do it later.
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Click on Create Event Notification, and then click on "Add" to create your first event.
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There is a set of basic details you will have to provide. These details include the Event name, Team selection, and Channel selection. after completing this step, please click Next.

There are a set of configuration options you need to manage as well. Scroll through the list, and toggle the preferred one on or off.

After the configuration is done, Trio allows you to test the integration. You can send a test notification to your preferred Slack channels.
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After you receive the notifications on your Slack app, the testing and setup are done.
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