Projects are assigned access through User Groups. To assign or change a Group’s access to a project, navigate to the Projects table and select the user icon under the Access column in the row of the specific project.

Select the Group(s) that the project should be assign to. Specific Groups assigned to a project can be changed at anytime. If no Group is assigned, the project will be considered “open” and Owners, Administrators, and Developers can access it. By default, Users only have access to the runtime.

Groups can be assigned to more than one project at a time.
See Groups for more information