This documentation should help you to configure the SCITAS clusters as parallel cluster in your local installation of MATLAB.
This should work with MATLAB >= 2019b.
So first install MATLAB 2019b from distrilog. You will need to install two addons:
Parallel Computing Toolbox
Parallel Computing Toolbox plugin for MATLAB Parallel Server with Slurm
Once this is installed in the "Parallel" > "Create and Manage Clusters..." dialog window, import the configurations