System field 'username' should be usable on cb userlist but not on cb tabs

I have the following question. I want to implement the following behaviour:

The system filed 'username' should be selectable in cb userlists BUT NOT viewable to anybody in the cb tab (to which it is assigned). If I use the following settings....



the field 'username' is selectable in cb userlists but unfortunately also viewable in the assigned cb tab.....if I delete the check from 'profile' it desappears form the cb tab BUT is now also not selectable anymore on the cb userlist....Is there an easy way to do this? ....I made some trials with the built in 'conditional feature'....but this looks very complicated...is there not a more elegant way?

regards

Move it to a tab that's in a not shown on profile position. You can also hide it from profile using CB Conditional or CB Privacy if you don't want to move it to a different tab.