There are 2 steps to adding a user:
Step 1: Click on Account and then Manage Users. Click the blue Add User button and then enter the new user's information.
Step 2: Once the new user is added to the account, click on Dashboard and select the job you would like to assign the new user to. Then navigate to the bottom left of the chat feature, and click on the blue Add User icon. Select the user you want to manage this job, and click the green "Add User" button.