Associate a Slack Channel with a Checklist
You can associate a specific Slack Channel with a checklist. With this configuration, your team can work on the checklist within that Slack Channel and all notifications - late checklist, late step, step completed - are sent to the Slack Channel.
People can still work on the checklist using DM with the ManifestlyBot.
Another bonus is that anyone in that Slack channel can start working on the checklist without being assigned to the checklist. This lets people automate the new checklist runs, without assigning them to specific people, and then letting people in that Slack channel pick and start working on the new checklists.
How to set it up
When editing a checklist template, you can set a Slack channel to receive all updates when people work on that checklist
You can also update this setting on the checklist run.