How are my team members notified of changes made to a project?

When a member displays a project, they automatically see the changes that have been made in their absence.
In the What view, the pictograms corresponding to the modified elements change color (they take on the color of the project). The same is true for the dates of the tasks in the What, When and Who views.
If you want to alert a member of changes made, you can send them a Buzz.