TP / Traktor Kontrol S4 MK3: How to map Phono Turntables to C & D channels?

Hi,
By default, phono inputs are set to channels A & B which are the default channels for the digital tracks. This is highly inconvenient as it doesn't seem possible to hide A & B channels in Traktor Pro as it takes screen real estate.

My apologies in advance as I haven't tested things further. In order to map the phono inputs to C & D which in turn allows to hide those channels in Traktor Pro, what should be done? Cause it seems that A & B are the only ones that accept a phono input. Traktor Pro does not differentiate Line Input versus Phono Input when selecting what a track deck should control, which means that there is no way to map invariably as I've seen recommended in a separate thread on this forum.

This is a candidate for an update to TP as many DJs still want to use turntables and would enjoy a better implementation in TP4, that is by hiding the channels assigned to the turntables..

Thanks

View of the track deck control selection. Live Input doesn't differentiate between phono and Line Input which leads to think it's not possible to map phono away from its default A & B channels.