I've downloaded and installed the CD isos for 10.2 RC1, both OSS and non-OSS. However there are some packages I need and that I don't find afterwards with YaST>Programs>Add-Remove software.

These single rpms are however found in the factory links, but which have to be downloaded and installed manually from a terminal:
http://ftp.opensuse.org/pub/opensuse/distribution/SL-OSS-factory/inst-source/
http://ftp.opensuse.org/pub/opensuse/distribution/SL-Factory-non-oss/inst-source-extra/

Why isn't these sources added automatically to YaST at the 10.2 RC1 installation?

I've tried to add them as Yast HTTP Installation sources, but without succeed so far (errors like a server name is needed or url path).

Therefor, what is the correct parts to be added as respective
server name?
url path?