Slack is a great way to use Jibble, and it's free.

To set it up, you will need:
An existing Slack account
Team owner permissions in Slack of your channel. You can read more about it here.
Note: Your Jibble account email should match with your Slack email
This article covers:
Setting up Slack on Jibble
Go to Organization > Integration > Click on Slack
You will see a modal that integrates with Slack
Click on "Connect with Jibble"
A new page will be opened (See screenshot below)
Select the workspace on the top right that you want to integrate with Slack,
Then select a channel below where all your Jibble notifications will be posted, i.e. when a team member clocks in and out
Click "Allow" when you're done
The Slack integration is now complete!

Notes:
A slack user can only use Jibble if they have been added to the Jibble web app. You can add users via the web app: "How do I add users to my team?".
Auto clock out will not be triggered for entries via Slack.
List of Slack commands
There's a list of commands that you can use to clock in and out on Slack for Jibble.
Here's the full list:
in - start recording time
break - take a break
out - stop recording time
all - see who's working
times - check your weekly timesheets
log - check your daily logs/timesheets
acts - list activities that you can record time against
projects - list projects that you can record time against
help - Displays help
contact - send the Jibble support team a help request or feedback
Read more in detail about the Slack commands here.