Redmine

Hello everybody,

When a task exceeds the due time can this event be shown on the GANTT
diagramm ?

How can we figure this in redmine ?

If there is not such a capability, are there plugins which i can add to have such a functionnality ?
Is there a mean to display critical path in GANTT ?

If not is it possible to update the better GANTT plugin by doing some developpement work ? (where
to start ?)

Many thanks

Christian