Just started reflying 777 since SP1c and can't remember the key combination for time acceleration.   Wan't there also an option in FMS also for this. Has this moved.  I have RTFM and have searched but not found.  Found it - it is called Auto Cruise in the Tutorial and Time Acceleration in the Intro hence the confusion on searching.

 

Peter Rowan

So, you answered your question? The key combination (R +/-) invokes FSX simulate rate change. There is no key combination to invoke PMDG Time Compression feature, which is different from FSX simulation rate change.  Auto Cruise is the title of the FS Actions screen, one of two places in the menus where Time Compression can be set.