/smarttask addto create a task. You can add text after the command which will pre-fill the taskname.
/smarttask linkto link the current channel with a project in SmartTask to get notified on project updates.
/smarttask settingsto change the default organization linked with Slack. Default organization is where new tasks would be created.
/smarttask helpto see what all is possible with SmartTask's Slack integration.