To make an existing folder a Collaboration Folder, click on the little blue box with the white downward arrow and select 'Invite Collaborators.' A pop-up window will appear. Enter the email addresses of the individuals you would like to collaborate with.

NOTE: This must be the same email address your collaborators have used to register for their Box.net accounts. Please verify this before you proceed.

Once you have entered them all, click 'Ok,' and email notifications will be sent to those contacts. Once they log into their Box.net account, they will be able to accept or reject your invitation to collaborate on that folder.

When a folder becomes a Collaboration Folder, its icon will change: Rather than being a plain, yellow folder, it becomes a blue folder with a small image of two people on it. All collaboration folders will automatically appear at the top of your files list within your account.