You will automatically receive notifications each time an action is taken by a freelancer on one of your Postings or Projects, be this a new Proposal, a new message, or the acceptance of an offer. Adding followers allows your colleagues to receive these notifications as well, so you can easily collaborate and stay in the loop on your company's Postings and Projects.
When viewing your Posting or Project, click Add Followers, then select the names of the colleagues you wish to add as followers on that posting. Once selected, they'll immediately begin receiving notifications for the posting.
From Posting page:
Within Project page:
If the colleague you wish to add as a follow doesn't appear on the list, you'll need to send an invite to your company profile.