1. Login to the Workast using Slack Credentials
2. Click on a list on the left hand menu
3. Find the task that you want to add a comment to
4. Click on the box which says "Add a comment"
5. Type your comment and press Send
If you would like to leave a comment on a task using Slack, please follow the instructions here.
The person that is assigned the task or the creator of the task will be notified in Slack of the comment