Click the down arrow on the right end of the column that contains the information for which you want to apply a filter.
Select Filters from the context menu.
Specify the criteria using the available controls. The type of controls available to you depends on the type of information shown in the column.
For example, on the Notification Management page, you can select any of the available features to show only those Notification email templates related to the selected feature.
A column with a filter applied to it has a column header in bold and italics, so you can easily understand that a filter is in use.