How to setup a process simulation?

I just created a very simple proces, based on the video entitled "Proces Simulation" ( https://youtu.be/Hat_pbxCoRU).

I am using: Bonita BPM Community Edition Version : 7.0.1 Build id : 7.0.1. on an iMac.

All elements as shown in the video were recreated. But I can't hget the simulation running. Any tip? Is there any other video on how to use BonitaSoft just for running simulaties of various scenario's of modelled business processes?