Homematic with Berker push buttons

[jvs]

In short I want to start using the homematic 4 button interface for wireless transmitting of signals which are realized using a traditional push button. I'd like to realize the following:

1x Homematic push button interface (767-84)
1x Berker 5034 04 or 5038 08
2x Dimming actuator

So then I can switch from one point two different dimming lights. But... which push button to use the 04 being:
Group rockers push-button 4 NO, common input terminal
or the 08 version:
Rockers push-button double change-over contact, usable as NC or NO with separate input terminals

The first one can also be used for shutters.

The ultimate wish is dimming light 1 up and down on the left and dimming light 2 up and down on the other side.