Seem you hesitate to ask your agent; so either you can do it yourself on PMO, or
use this form, but still need to send it yourself to PM office.

You can also get this form at the office;

https://www.dropbox.com/s/wtvvh9kx7mljr9q/i...060514.pdf?dl=0

PMO only allow for new DDI Enrollment.

You need to submit the change of DDI request form in any of PMB Branch nearer to you to take effect or ask your servicing UTC to submit on your behalf after signed & filled up by you as unit holder.

That is the correct form. (Form ID is FOR10101-0605142)