Synchronous package execution



I have a robot script running on a workstation in a package (through Orchestrator), I would like to launch another package (from the executing script) which is also stored on that same machine, waiting for the second package to complete. I do not want to invoke a workflow, but rather launch execution of another package.

What is the proper method to launch a package within an executing robot/script (project), waiting for the second package to complete execution?