What is an Open Task List and how do I create one?
By making a Task List open, all tasks under only that particular Task List becomes visible/accessible to all your team members (Super, Regular & Limited) of that project. Anyone would be able to track, close, add time, comment and upload files to an Open Task List task. So, if you have a bunch of tasks that you want to assign to A and B but have everyone in the team know about and track their progress, go ahead and create an Open Task List and add those tasks within it.