Currently Active Users Viewing This Thread' ?

[Brembo]

Sorry if noob question.. I am using 3.7.2.. How can I make it enable in my forum post.. Is it need plugin.? If yes can some one give me the plugin url

[Lynne]

It's a standard feature: vboptions > Forum Display Options (forumdisplay) > Show Users Browsing Forums (for the forums) and vboptions > Thread Display Options (showthread) > Show Users Browsing Threads (for the threads)