We allow 5 extra users for Startup subscribers, and 10 extra users for Corporate and Agency Unlimited subscribers to collaborate at no additional cost. Even more users can be added with Agency Unlimited plan for $5/mo per user.
You can provide access to your projects for other users by adding an alias account or sharing projects to other WebCEO users via the User Manager (Heads Icon at the top right of your screen).
Both of the above methods will share full access to the service functionality that you have (for more details please contact us).
If you are thinking of a multi-level project operating model, where you would like to work in team with every member having their special permissions and roles, you should consider the White Label solution which will add only $20 to your monthly bill (fixed fee for as many projects as you like).