The easiest way to create a new resource is with the Assign Resources dialog. It contains not only the capability to assign resources, but also to delete assignments, replace resources on assignments, and to view work and availability graphs about resources.
The important thing to remember about this dialog is that it always contains assignment information about the currently selected task and you do not have to close it to select a new task. You can still change the selected task while this dialog is open . This makes it a convenient way to view and edit assignments on tasks .
Creating an Assignment
Click the Tools, Assign Resources menu item.
IMPORTANT Click the Assign Resources toolbar button on the Standard toolbar.
Select the task to which you want to assign a resource.
The name of the selected task appears in the dialog.
Select the resource you want to assign.
Click the Assign button.
Edit the Units value, if desired.
Make sure that any resource assigned to the selected task has a check next to it.
Click Close to return to the main Project window.
Filtering the Assign Resources Dialog
Select a task and click Tools, Assign Resources.
Click the Resource List Options button on the Assign Resources dialog.
To filter the list of resources using an existing filter, check this box and then pick the filter from the list.
Checking the Available To Work box and then entering an Hours value filters the list to show only the resources that are available to work that number of hours during the span of time of the selected tasks.
Click the Tools, Assign Resources menu item. 
Select the task to which you want to assign a resource. 
The name of the selected task appears in the dialog. 
Select the resource you want to assign. 
Click the Assign button. 
Edit the Units value, if desired. 
Make sure that any resource assigned to the selected task has a check next to it. 
Click Close to return to the main Project window. 
