Every hirer is given the ability to nominate creatives who they think deserve to be a part of the Working Not Working community. So, yes, nominate the very very very talented creatives you already love to hire so you can keep tabs on them.
The "Nominate a Creative" button is located in your Settings menu. Just click your profile photo thumbnail in the upper right corner of the navigation bar. Then input the creative's information to send them an invite. They'll receive emailed instructions with steps to start building their "Contender Profile." A Contender is an applicant to WNW who has yet to be approved by the Membership Board and elevated to full Member status. Contenders can still be followed, messaged, and hired.
Prospective creatives can also apply for membership on their own.