To add users to an existing team:  
• Click on 'users' on the top black navigation bar  
• Click on the 'teams' section  
• Find the team you want to add to and select 'Set members and permissions' from the drop down menu on the right hand side  
• Find the user you want to add in the 'Available users' section and drag them into the team bar at the top  

Did this answer your question?