The to-do list is a feature created to be sure users don’t forget certain tasks they need to do. When you see, for instance, a learning bite in the discovery stream, you can press on the ‘+’ icon and it gets added to the to-do list.
Then, when you want to open that learning bite, you open the to-do list via the button on the bottom (mobile) or top navigation menu (desktop) to see all the items on your list.
From there, you can click on the content and complete it, and when it’s completed, it gets automatically moved to "Done".
Admins can add items to employee's to-do lists through automations.