How to get Vera Edge, Duewi 05445 and Popp switches/dimmers to work along?

As of today I am the proud owner of a Vera Edge. After a long period of consideration I took the plunge into Z-wave. Within this first purchase I bought 3 Popp sockets and a Duewi 05445 remote control.

It was relatively simple for a layman to get the popp (123580 and 123610) to work with the Edge out of the box. I updated to the latest firmware and within minutes I got all stuff to work.

Except for the Duewi remote. I’d like to use this as an additional, but second controller, next to the Edge. I’ve included it is a ‘generic device’ and all lights switch off as I push the ‘All off’ button’. But I have no idea how to assign each light to a different button and use the Duewi as a simple remote. Nor can I find anything usefull in the manual. Anybody an idea how fix this?

Thanx in advance.