Project 2010 introduces a new visual indicator that shows when a resource is over-allocated within the Gantt chart view. This is a great feature that ensures resource over-allocations are front and centre when people view the schedule, instead of being buried away on a resource tab. However there are times when you may want to suppress these indicators without hiding the whole indicators column, which may contain other important information.

Another potential area where errors can creep into project schedules impacting the delivery of a project is that of overallocation of resources. An overallocation is where a resource is assigned more work than they have capacity to complete it. For example, a resource works an eight hour day and is assigned two tasks, each of eight hours effort, both scheduled to occur on the same day as shown below.