In Project, a task normally has work associated with it after a work resource (people or equipment) has been assigned to the task.
When resources are assigned more work than they can complete in a specific period of time, they are said to be overallocated during that time period.
You must assign resources to tasks before you can track their progress or cost.
Project follows the scheduling formula: duration times units equals work.
Effort-driven scheduling determines whether work remains constant when you assign additional resources to a task.
The easiest way to understand effort-driven scheduling is to ask yourself, “If one person can do this task in 10 days, could two people do it in five days?” If so, then effort-driven scheduling should apply to the task.
Smart Tags appear after you perform certain actions in Project. They allow you to quickly change the effect of your action to something other than the default effect.
Assigning material resources to tasks allows you to track consumables.
Assigning cost resources allows you to associate financial costs with a task other than those derived from work or material resources.