As with knowledge base, no special configurations are needed to work with the internal ToDo called Scheduler.

As an admin, you would however need to provide required permissions via Roles to enable access to the menu item Scheduler and enable the dashboard panel ToDo.

For integrating desk's ToDo to a user's personal calendar in an external application, read the section staff/todo-scheduler which provides details on using calendar feed (also called Internet Calendar by some applications) and email based integration using .ICS files.

As a recap, entries can be made from an active ticket by clicking Add To My ToDo, and from the scheduler interface directly.