Shared tasks
Definition:

There are three ways to share your tasks. Workspaces allow you to privately view another person's list and manage their tasks. Joint Tasksallow multiple people to privately share the same task. Publishing allows you to publish your list for the entire world to see. 

Example Usage:

share todos

Source: Collaboration and Sharing for Tasks. URL https://www.toodledo.com/info/sharing.php - abgerufen am 2016-03-17