Report filter enables filtering of selected reports. Main parts are filter fields and number of rows returned.
Advanced filter switch opens/closes filtering section. Refresh button right of switch refreshes grid data.
Filter fields - when filter field is selected filter options will be shown based on filter type. On
+ button new condition or group can be added. % groups can be added and on with conditions inside. So very complex filtering can be done.
x button selected filter can be erased.
Number of rows - default setting is 50 rows, but you can pick 20,100 or everything you got 
. Just keep in mind that too big data can and will slow down grid loading.
Filter button start filtering and refreshes grid with new data.