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the Homepage - see article on managing tasks from the Homepage
the Tasks App - see article on managing tasks from the Manage Tasks page
a Progress Board - see article on managing tasks from a Progress Board
Add tasks
Steps
Start typing in the new task text field.
Click the down arrow to open the Advanced Options section that lets you tag the task with other details
Do tasks
Tick the checkbox next to the task to mark it as Done
See tasks
Toggle between viewing To Do tasks and Done tasks by using the tabs at the top of the Tasks box