Some projects are pretty simple ”they contain only a few tasks or resources, and it's easy to keep track of them onscreen in your views. However, there are those projects that are very large and take up many, many screens of data. Finding that certain set of tasks or resources you are looking for in this situation can be difficult. Filters allow you to limit the data shown onscreen so it's easier to find the information you need.
Applying a Filter to a View
Click Project, Filtered For.
If the filter you want to apply is shown in the menu, select it to apply that filter.
If the filter is not shown on the menu, click on the More Filters item.
Select the filter you want to apply.
Click Apply.
Removing a Filter from a View
Click the Project, Filtered For menu item.
Select All Tasks from the menu.
Using Autofilter
Click the Project, Filtered For, AutoFilter menu item.
Click on the Auto Filter control in the field you want to filter.
Select the value for which you want to filter. Only tasks or resources that meet the criteria you select will appear after you click on the value.
Click Project, Filtered For. 
If the filter you want to apply is shown in the menu, select it to apply that filter. 
If the filter is not shown on the menu, click on the More Filters item. 
Select the filter you want to apply. 
Click Apply. 
