AJO Business Proffesional course query

Hi, I have enrolled in a Journey Optimizer course (AJO-BP200) but have come to a shuddering halt at an early stage. One of the first instructions is ‘Start the Simulation’. Where is this?

This doesn’t appear to be a paid course, but I’m thinking it is and at the point of payment you get access to the Simulation? I’m unable to find it via the AJO within my standard working interface.

Any ideas?

Many Thanks in advance