Screenshot options

[Krikor]

After reading rich2205's post at:

https://www.gimp-forum.net/Thread-Color-...5#pid30585

The very practical way in which the area was selected (demonstrated in Link --➤ https://i.imgur.com/4QTyMtL.mp4 ) left me thinking: "Wow, how has this never been so easy for me!? "  

So today I decided to try this new way to get a screenshoot, but I found that my Gimp doesn't have the same tools as those used by rich2005.  

There is simply no option "Select a region to grab".

01-Screenshot in the rich2005 Gimp;

02-Screenshot in my Gimp.
   

Would this option come from a Gimp configuration? From a script/plugin?

How could I make this option available in my Gimp? 

Thanks for clarification