The administrator account created for your organization may upload images. However, this account may grant permissions to other user accounts so that those accounts may also upload images.
No you cannot; therefore make sure you set it up correctly before starting any project with that product version. Keep in mind that the product version should be considered as the name of the image, the version can be specified later on when you Tag your image during the project.
No, the Red Hat certification is a validation that the container, which is a combination of application software and Linux, is made of genuine Red Hat parts. Currently, Red Hat has just a little over one million paying customers today. Our customers do not use other versions of Linux and pay us for the services and support we provide to them. Therefore, your container needs to be built on a version of Red Hat Linux.
Should be on / (the root or home directory of where the application resides). You can find an example provided here: Container Zone Template.
First, unpublish all containers. Then change the namespace/repo in the project settings. Finally, re-publish your containers.