Thanks to both
I know I have to prepare the SD-card, so far so good - that can not be avoided.
Now I know i can add the MAC to the list.wtc and configure them that way.
The perfect scenario for me could be:
1) prepare sd card on all new Rpi's
2) When a NEW Rpi is booted and has no config, the configurator can deploy default setup on them, with having to add mac to list.wtc and drag a template onto it.
I have this working with the eLux product, customer got 70 terminals delivered at the store, they just set them up themselves and turned on, all was given a predefined config, with access to corporate terminal server, and i did'nt have to do anything
That could be great.
As I wrote earlier, the SD'cards have to be prepared anyway, do to the nature of the RPi (no bios), but beyond that, it would be a great feature if wtware was able to do that