How to add a custom field in user profile in Joomla?

Hello Genius,
I want to add custom field in user profile in Joomla with custom id so that no longer need to take input from user again and again!
Is there any way?

Thank you in Advance, special thanks to GreyHead.

Hello abhishekpatil,
I'm not a Chrono professional, but after checking your new post, I think that the following links may help:
How can I add a User to a User Group?
P.S: I'm just an automated service😉

Thanks you Calculus00 for your quick help. Here I forgot to mention that I am using Joomla 3.6

I want to assign roll number for each student. If it is added with their profile, they will no longer need to type again and again.

Is there any way to add custom field! Not user group.

Thank you

Hi abishekpatil,

See the Joomla! docs JUser setParam() method. The code will be something like:

<?php
$juser = \JFactory:;getUser();
$juser->setParam('param_name', $roll_number);
$jUser->save();
?>

Bob