Updating with new screenshots
Here are some updated screenshots on how to create a UiPath Orchestrator process and subsequently run it with a robot.
This is the latest version of the UI in which the process is created. This is an unattended robot of course. My understanding is that support for Studio or StudioPro robots is ending.
How to run the process
And the following is how the screen looks when you go to run the process. Notice the unattended robot must be created in a previous step.
Keep it Hello World simple to start
In this case it was just a simple little UiPath Hello World application that was published to Orchestrator. I always recommend getting a simple application published to Orchestrator and running as a process before trying to tackle anything too complicated.