Assign a single work resource part time
- In the Units field, type a percentage less than 100.
This amount should represent the percentage of working time you want the resource to spend on the task. For example, if the resource will be working on this task half time, type 50%.
The resource units can be changed in Gant grid on resource name cell amid  type desired % units
Material resources: Consumable materials or supplies, such as concrete, wood, or nails.), in the Type field, click Material.
In the Material Label field, enter the label (for example for example, yards, tons, or boxes) for the resource.
Specify the consumption rate of a material resource
- In the Units field, type a decimal that indicates the amount of material to be used for this assignment, and then enter the material label.
For example, if you're using 20 yards of lumber, type 20.
- If the amount of material used depends on the task duration, enter the rate of use by adding a slash (/) and a duration code or abbreviation.
For example, if 20 yards of lumber is used per week, enter 20/week or 20/w.
The resource units can be changed in Gant grid on resource name cell amid  type desired value units