I tried to build RT model on k1boot of the test bench.
First I created /opt/rtcds/userapps/release directory to put model files.
Also created /opt/rtcds/userapps/release/etc/userapps-user-env.sh file to set the path of RT models to the RCG_LIB_PATH parameter.
I found that the directory structure was different from the current KAGRA DGS at this time.
This is because of my misunderstanding of facter and hiera so I modified "site" parameter to KAMIOKA.
The build command now works, but an error has occurred so I will fix this.