If you want to work in APEX with more developers, you can create a user for each developer. There are three types of users in APEX: administrators, developers, and runtime users. Runtime users only have access to team development (to provide feedback on applications) and to use an application. Developers can have access to the application builder, SQL workshop, and team development. Administrators have access to all the components. This recipe shows how to create a developer user.
Make sure you have an administrator user to be able to create a user.
There are two ways to create a user:
No credit card required