Filters can be used on the Users tab to make it easier to find users within your company. 

The standard filters can be found along the top as drop down menus. Additional filters can be added using the Add a filter button. 

Users can be searched for using the Search users bar.

The columns can be reordered based on each heading by clicking the row heading and you can drag and drop to change the order of these columns. Additionally, columns can be removed from view so that less information is being displayed, to do this click the settings wheel.