This layer does offer a configuration wizard to guide you through the basic configuration. To use it simply run
<layer-root>/script/configure <layer-root>(<layer-root> is the full-path to the meta-sca-layer-dir. e.g. /mnt/mydisk/meta-sca)
the result of the wizard should be copied into either build/conf/local.conf or into your distro.conf-file
The script requires python3 to be installed on your system