Unable to edit miq-Dialog defaults from GUI

Issue

• How does one edit the defaults in this file: /var/www/miq/vmdb/product/dialogs/miq_dialogs/miq_provision_redhat_dialogs_template.yaml
• It is not desired to edit this file within the filesystem, but rather use Cloudforms web GUI to do this, however it does not seem possible to see this file under the folder structure as only this file location is visible: /var/www/miq/vmdb/db/fixtures/ae_datastore/