If you wish to make anotherdomain.com as Addon Domain in your existing hosting, kindly :

1) login to your cPanel : www.maindomain.com/cpanel
2) and follow steps in this video : https://www.youtube.com/watch?v=XAOBKjeD1Hw

Once done, then only you can install/create website at anotherdomain.com : https://billing.netkl.com/webdesign.php

If you wish to install WordPress, you may follow this video tutorial : https://www.youtube.com/watch?v=Nsbw4DogFSQ

All the best! :)

NOTE :
Before you do the above, please make sure, that the nameserver of anotherdomain.com is :

ns27.netkl.com
ns28.netkl.com

Otherwise, it will not work.

Jika anda mahu jadikan domainlain.com sebagai Addon Domain di dalam hosting sediada, sila :

1) login ke cPanel : www.domainutama.com/cpanel
2) dan ikut arahan dlm video ini : https://www.youtube.com/watch?v=XAOBKjeD1Hw

Setelah buat semua di atas, baru lah anda boleh install/create website di domainlain.com : https://billing.netkl.com/webdesign.php

Jika mahu install WordPress, ini caranya : https://www.youtube.com/watch?v=Nsbw4DogFSQ

Sila cuba ya :)

NOTA :
Sebelum buat langkah di atas, sila pastikan bahawa; nameserver domainlain.com ialah :

ns27.netkl.com
ns28.netkl.com

Jika tidak, ia tidak akan berjaya.