Control over simulation in Cameo Systems Modeler

When I have paused my simulation, I would like to be able to step through my model where I determine which possible, enabled action is taken next. According to the documentation, 5.2 Simulation Debugger, Step into should do the trick: "To execute and run animation in the current active element of a selected simulation session in the Sessions Pane." But that doesn't seem to work at all.
Is this a known bug? Don't I as a user not have full control over the simulation? Or is there another way to determine the next action to take?
Any help is appreciated!