Online Count shows you how many visitors are on your website. You can set how long you wish to class visitors as active - if they haven't refreshed/changed pages within this period of time, then you can consider them not active or they have left your site.
There is no administration section with Online Count, and you can't view where people are on your site. It's a basic, no frills script which is designed to show how many people are active on your site.
Do you wish to purchase a Users Online script?
Download Online Count first and test it on your website to ensure the scripts can run on your server.