IŽm wondering how this is done?  In the manual there is talked about that it is possible to render on many machines at once using batch processing.  
 
Anyone know how this is done?

1. if you save all your motion flows in the same directory shared over your network, Retimer or Retimer batch will check which flow is missing and will compute the first one which is missing.
To do so, simply run the same command line on multiple machines.
 
2. if you don't wish to save your data in a shared directory, you'll have to specify a different time range for each machine. On the first one, you can process from image 1 to 10, then 10 to 19 on the second one and so on.  
 
The same process remains true for the rendering.

I would definatly not pay more than minimum wage for advice like that.