Resource: The resource assignment for the activity. Click 
to select a different resource.
Role: The role assignment for the activity. Click to select a different role.
Activity Name: The name of the activity to which the resource/role is assigned.
Cost Account: The cost account associated with the resource/role assignment. Click to select a different cost account.
Price/Unit: The selected resource/role assignment's cost per unit.
Rate Type: Determines which price/unit is set on the resource/role assignment. You can choose a new rate type.
Primary Resource: Mark to indicate the selected resource assignment is the primary resource for the activity.