Here is the solution to what I asked:
To redirect to the right part of the website, in plugin User group named joomla under OnUserLogin event method add the following Code:

$app = JFactory::getApplication();
$app->setUserState('users.login.form.return', $options['return']);

I myself did not reach this answer, I learnt from Sergey Onichshenkov Everything is working fine now.

###Update:

Also to complete the answer , in case of joomla update, the code shall be gone, in order to get rid of copy and paste the code again, you may develop a custom plugin under the group User and design it as what is told in the initial answer.

Here is the solution to what I asked:
To redirect to the right part of the website, in plugin User group named joomla under OnUserLogin event method add the following Code:

$app = JFactory::getApplication();
$app->setUserState('users.login.form.return', $options['return']);

I myself did not reach this answer, I learnt from Sergey Onichshenkov Everything is working fine now.

Update:

Also to complete the answer , in case of joomla update, the code shall be gone, in order to get rid of copy and paste the code again, you may develop a custom plugin under the group User and design it as what is told in the initial answer.

Here is the solution to what I asked: To redirect to the right part of the website, in plugin User group named joomla under OnUserLogin event method add the following Code: $app = JFactory::getApplication(); $app->setUserState('users.login.form.return', $options['return']); I myself did not reach this answer, I learnt from Sergey Onichshenkov Everything is working fine now Kian William

Here is the solution to what I asked: 
To redirect to the right part of the website, in plugin User group named joomla under OnUserLogin event method add the following Code:

$app = JFactory::getApplication();
$app->setUserState('users.login.form.return', $options['return']);

I myself did not reach this answer, I learnt from Sergey Onichshenkov Everything is working fine now.

###Update:

Also to complete the answer , in case of joomla update, the code shall be gone, in order to get rid of copy and paste the code again, you may develop a custom plugin under the group User and design it as what is told in the initial answer.