You can manage your application with other developers (collaborators).
Just after you create a new application, you are the only developer who can manage it on the developer portal. But you can specify other developers as collaborators to jointly manage your application. The collaborators will have almost the same privileges as you, except for adding more collaborators and so on.
You can invite other developers as collaborators by entering their email addresses on the developer portal. Kii Cloud will send invitation emails to them. Existing Kii developer account owners can become a collaborator. They will see applications which they are involved as a collaborator as well as their own applications in the developer portal.