How to edit your task list's name

1. Go to the task list in the app Home tab

2. Click on More options

3. Click on Modify/Delete list

4. Make your edits to the task list name

5. Click on Edit

6. Your task list will be updated

If you have shared your task list in a channel, your task list name will be updated in the channel. If you have shared your task list in a DM, click on the 'Sync Todo List' button for the list to get synced with the Home tab. After that, the updated name of the task list will show up in the DM as well.