DJ Pro 2 : Pls keep pre-cuing stream running when accessing the pre-cueing setting box

When using Pre-Cueing (p-c) with DJ Pro 2 and trying to change volume of p-c by opening the p-c settings box … the p-c stream stops!!!
Pls change this to a ongoing stream while accessing the p-c box and changing volume !
Thx in advace
Wolfgang