I had a resource which was overallocated but when i inserted a column called overallocated, it showed as no, even for the activities that the resource was overallocated. why was that?

The overallocated field added to a task view simply notes whether the resource is assigned above their maximum units to that task. For example, you have Resource1 max units 50% and you have that resource assigned to a single task at 55%. The Overallocated field will show "yes".

Julie

how can i assign a resource % specificallly to a task though? i couldnt see it where. i clicked on the resource for that task but there is nowhere showing it

In the Task Form at the bottom is the best method of assigning resources and viewing assignment units.