Custom Docker Registry with multiple private repos

Rancher Server v1.4.3

We have a single custom registry URL to pull the images from, but there are different private repos inside that registry, each using its own credentials.
So if we create an environment for a team which are using multiple repos to deploy their images from, that won’t be possible as I get the error stating that the repository with this URL is already configured.
Is there any option of using multiple private repos under the same custom registry URL inside a single Rancher environment?