Activate CDJ850

Hello All,
Can you please help me out wit activating my set of CDJ850's in Mixvibes Cross? What I now have to do is go to the audio-midi setup in my Imac and create a CDJ850 setup. Mixvibes then recognizes the kit and pics up the signals. But I have to do this each time I start up, there must be a way to get this sorted.
By the way I would like to introduce myself and I have put in my serial number and other stuff in my user control panel but still can't write a new message. Maybe somebody can help me out with that as well.
Many thanks everybody!
Can you please help me out wit activating my set of CDJ850's in Mixvibes Cross? What I now have to do is go to the audio-midi setup in my Imac and create a CDJ850 setup. Mixvibes then recognizes the kit and pics up the signals. But I have to do this each time I start up, there must be a way to get this sorted.
By the way I would like to introduce myself and I have put in my serial number and other stuff in my user control panel but still can't write a new message. Maybe somebody can help me out with that as well.
Many thanks everybody!