Editing resources with the Resource Information inspector
A staff resource can be assigned an email Address. If the resource is associated with an Address Book card, you can use the pop-up menu to pick which address to use. Or, you can always just type an address. 
Click the Action button to associate this resource with an Address Book card, open the card in Address Book, or send an email or an instant message. 
The Units value means how much of the resource is available. (For materials, this measures the amount required instead.) 
Efficiency is how much effort the resource can make compared to the amount of time it takes. 
The Start and End dates determine for which dates the resource is available. The Cost per Use is an amount of money for each time the resource is assigned to a task.
Cost per Hour is an amount of money for each hour of effort the resource is assigned. 
Total Uses means the number of times this resource is assigned to a task. 
Total Hours is the sum of the effort of all tasks the resource is assigned to. 
Total Cost is the combined cost of all uses and all hours for this resource. 
The resource Name is the same as the one that appears in the resource outline. 
The resource