First you need and IntelliGantt solution!
We've just put the finishing touches on two new features. I'll profile our new 'Local Workgroup' in a couple days. Today I want to show you how easy it is to identify overallocated resources in one project AND across many projects.
Here's a pretty picture of several projects with their overbooked tasks highlighted.
Better yet, here is a screencast.
What it shows is a simple filter that can be applied to a project, or any group of projects. IntelliGantt has two filters that can work in conjunction. One filter is for things task related like 'ToDo' or 'This week's tasks'. To this filter we have added 'Show Overbooked Tasks'. The algorithm takes all resources and all tasks in the working set and computes which resources have been overallocated. These tasks are then listed in the task grid and gantt chart.
The other nice thing about how this feature is implemented is the highlights don't go away when you select another filter. For example, if you wanted to see the overbooked tasks in relation to all tasks, select the 'Show all tasks' filter. The overbooked tasks will retain their markings and will be easy to spot-- even with all the other tasks in view. Overbooked tasks can run, but they can't hide :)
Finally, we upgraded the resources filter so that instead of only one resource to filter against, you can have many. This means you can see two or three people's overbooked tasks at once. Or, for that matter, two or three people's ToDo lists, or their tasks next week.
Check out the screencast, and if you're impressed, download IntelliGantt Plus for a 15-day free trial. There's lots more to impress you.