For the controllable Tunze pumps that have a 1-10V input, you can set them up under Extras -> Current Pumps
I found it easier to do this in Profilux Control.

Have a look in the manual
http://support.aquariumcomputer.com/...ad.php?did=462

chapters 1.3.4, 7.4, 7.5 and 8.4


If you have a look through the pump control forum http://forum.aquariumcomputer.com/fo...rol&order=desc there are a heap of examples