You should already have the latest all the software needed to run RTiC-Lab. RTiC-Lab is installed in the default directory /usr/rtlinux/rtic. Thus, all you need to do is to copy the RTiC-Lab source tree into your working directory:
cp -a /usr/rtlinux/rtic /path/to/your/working/directory
where /path/to/your/working/directory is the path of the folder in which you will do all of your development.
Finally, go to the copy of the rtic directory:
cd /path/to/your/working/directory/rtic-*.*.*