Only Project Administrators can add users to a project. 

💡 Account Administrators who create new projects, are automatically granted the access level of Project Administrators.

How to add users

1. From the Home dashboard navigate to your project.
2. In the sidebar click the gear icon which takes you to the Project Settings page.
3. Click Users in the sidebar menu.
4. Add users to your project by typing their email addresses.
5. You can assign a user the access level of Project Administrator.
6. Email invitations are sent to the users. No further action is required on your part.

💡You can create user roles and assign each user to the appropriate role. This is helpfull when sharing views in the object table.