If you signed up before Aug 9, 2021, please click Previous plans to view your applicable plans.
To do lists are for all of us to track our work and set deadlines for ourselves. When you add a to-do inside a ticket that you are working on, this to- do list is available on the dashboard as well. When this is complete, you could check this in the dashboard which would be reflected inside the ticket as well.
A few things to understand about to- do list are that when you add to-do for someone else who is assigned to a ticket, this would be available in that ticket's details page, however, it would not be available on their dashboard.