Move repositories into group via commandline arguments

I would like to have a commandline option available for smartgit.exe which enables me to move a repository into a 'Group' in the Repositories window. 
At the moment this is a manual activity which is taking too much time since, in our situation, the number of involved repositories is increasing  rapidly over 30.

When this commandline option is available we can use scripting to move these repositories to the correct group which saves lots of time and reduces errors.