Campaign Enterprise Small Business, Professional, and Performance Editions include support for multiple users/additional concurrent broadcasts. For an additional price you can add from 1 to an unlimited number of additional users licenses. For each additional user, there is a corresponding increase in the number of concurrent broadcasts; a four user license allows four concurrent broadcasts. If you purchase one of these editions you will be asked during the check out process if you would like to add any additional users to your order. If you have any questions about additional users please call us at 1-949-218-3852 M-F 8am - 5pm M.S.T. or use our contact form if it is after business hours.