You can use filters on many of the pages of the portal site to limit the items that appear in lists based on the values of properties or columns in those lists.
The option to filter a list appears on the toolbar for that list. When you display the filter options, drop-down lists appear at the top of the column for the properties by which you can filter. All current values for that column are provided. By clicking an item in the drop-down list, you choose to display only items with a value matching the filter.
For the custom views that you can create in the Site Directory, you can apply custom filters that filter on more than one property at a time whenever you are using a custom view. For more information, see Using views in the Site Directory.
Using views in the Site Directory