Hi all, how to seperate number into single line? I wish to port out my number to another telco, but keep my sup lines with current telco.

From what I've been reading, making the sup lines into single is the best way. But how to do that? Ask my current telco?

Guys, if I need to change my supplementary line to new owner/primary, do I need to bring the new owner with me to the telco center? Or I can just bring softcopy of their ic?