How to set up additional repositories for svn(/git) in the Revision Control Appliance?

Everything seems to be so inclusive from your part, so I thought there would be an easy way (like via webmin) to add repositories to one of the VCS. But I couldn't find anything like that.

Asked the other way:

For adding a svn-repo, do i need to use command-line and editor?

Thx in advance, karfau