[Brett Stephenson]

Thanks Steven

I’m a bit new to all this coding stuff so please bear with me !

in the doumentation you say

If you copy paste the above code, there are a few items you should
absolutely change… You should change the function name
cn_register_custom_metabox_and_text_field. Function names should
always be unique. If you do not make sure of this, you will crash your
site.

is it important what I change the name to?

and do I need to change both instances?

eg

add_action( 'cn_metabox', 'cn_register_custom_metabox_and_text_field' );

function cn_register_custom_metabox_and_text_field() {