The company has to notify IRBM on the changes using the CP204B Form. The form can be downloaded from IRBM's website. The form must be submitted to the following address:

Inland Revenue Board of Malaysia,
Tax Information And Record Management Division,
Ground Floor, Menara Hasil,
No. 3, Jalan 9/10, Seksyen 9,
43650 Bandar Baru Bangi,
Selangor.

Date lines for CP204B submission is stated at the back of the form.