Simulation Studio is not part of PE6 as the technology to connect simulations has significantly changed.
However PE6 does allow third party plugin simulations.
Are you looking to create a new simulation or to use an existing Logicator one?
There are two different ways to use AXE101 simulation:
1) Simulation picture - select the AXE101 is the Workspace Explorer simulation list. This makes the simulation panel show the AXE101
2) AXE101 plugin - this is like the Logicator animation - select Simulate>Connect>Software Simulation>AXE101
The screenshot attached shows both, when you run the simulation you should see a LED colour change in both, although there is a minor bug for us to fix (the two simulations currently animate opposite LEDs!)
There are two different ways to use AXE101 simulation:
1) Simulation picture - select the AXE101 is the Workspace Explorer simulation list. This makes the simulation panel show the AXE101