To-Do Overview
To-Do's can be attached to a Project, Client, or nothing. You can change the attachment of a To Do after it is made. You can also convert the To Do to a Debt/Credit (via contextual menu).

Studiometry can alert you when a To-Do is overdue. Simply enter a due date and click "Notify When Overdue."

When creating a To Do, you can right-click or control-click on a field to enter data related to the Project or Client the To-Do is attached to.

If you would like to record an end date/end time, you can set the type of the To Do to an "Event."