If you'd like to set a task within your Loop (i.e. read a certain book, talk to a certain person, etc), head to your intended Loop and click the + symbol in the bottom, then select 'Create a Task'. 

Here you can define the details of the task, and choose who will perform the task. You can also optionally set a due date.

Once a task has been set, the receiver can mark the task as complete once they have completed it.

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