Please see Computing Services' blog post for more details
The Opus macro allows you to import publications from Opus, but in order not to get every publication you have ever written, only the ones you want to highlight, you need to select the publications in Opus.
Log in to Opus and add or edit your publications in the normal way.
On the publication input screen, there is an option "include in CV". If you select "Yes, include this", it will be included by the macro; if not, it won't.