I found out the solution and it was pretty easy. I forgot to log in as administrator so I didn't have the rights for such setting. When I logged in as admin everything works now :)
thanks for effort
I am not sure if this will help, but I found this video show how to perform the Auto Density Uniformity Adjustment.
Hello, I found solution for Auto Density Uniformity Adjust but we cannot select any "Standard Stock" because there is only text field not button or dropdown. How can I set my Custom stock for Density Uniformity Adjust.