Ho to add configurationOf to my repository

I have my repository at smalltalkhub

In the repository browser, I see at the left side my "RKA24" and at the right side all my versions.

Til now, I had my ConfigurationOfRKA24 only as a fileout.

Now I want to add the ConfigurationOfRKA24 to my repository. 

Result should be that I have another entry "ConfigurationOfRkA24" at the left side of the repository browser.

Ho can I do this? Sorry, this is a basic question and I think it should be easy, but I did not find how to do this.

Regards

Sabine