Usually, I think it's better to design parallel processing in the Scheduling Manager in SMC instead - at least when it's two different jobs that doesn't need input parameters from a previous job.
More information how to enable parallel processing in DI Studio is found in the documentation:
Need to connect to databases in SAS Viya? SAS’ David Ghan shows you two methods – via SAS/ACCESS LIBNAME and SAS Data Connector SASLIBS – in this video.