@MehdiSarkar, if your device is A50, then I think, after recent update, your device have gt this feature. if its not showing..then please perform normal phone reset settings general management>select reset>click on reset settings
For this @mk932 first you have to turn on smart capture, goto settings>advance features> smart capture(enable it).
Now press the down arrow and power key to take screenshot, when screenshot is taken you see a bar below for more options, just press the two down arrow icon inside box untill you reach the point where you want the ss to be end. here you go.
