Most tasks at P2PU are open-ended, and we encourage people to
learn at their own pace as they make their way through the
material. Also, since P2PU is virtual, we realised that timezones
can be a problem with setting hard deadlines!
But that doesn't mean that you can't set due dates for
One way of making this work might be to get peers to evaluate
each others' work. If people know that someone will be looking at
something they have produced (via email, a blog post with a link on
the P2PU course, or uploaded directly into the task) and then
evaluating it, that will probably encourage them to submit by a
certain date and time. Also, if you have some kind of synchronous
discussion (via skype, or the chat feature built in to P2PU) then
people could bring their work to that meeting.
Let us know if we can help you with anything else!