The method is fairly simple but takes a bit of fiddling and tuning, and gives you a headache when you're done. 

Set the starting points and the Max and Min limits for the 'short-moving' part and the 'full-moving' part correctly.  Then raise the deltaAddDelta number for the 'short-moving' part so that it bumps its own limit before the 'long-moving' part is done.  

This gives an early-quit instead of a late-start.   You want a late-start....  You can reverse the time scale by adding a new control dial that runs the original control dial backwards, then hide the original control dial.  That is, put a valueOpDelta paragraph in the original control dial with the deltaAddDelta number of -1, slaved to the new time-reverser dial that the user will see.

Now you can take two aspirin.

Alternatively, if the figure is meant for use only in P8 and above, you can use the Dependent Parameters system to "train" the desired arrangement.

For an example of delayed action (rather elegant if I do say so myself!) look at the "raise" action in my Venetian Blinds, part of the Arcade package:

http://www.sharecg.com/v/47342/gallery/Poser/Arcade-Hotel

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