Cubase Artist 10 : Split one Stereo Track to two Mono Tracks

In Cubase Artist 10, I would like to split one Stereo Track to two Mono Tracks.
I find a lot of solutions on the Web with the menu Project / Convert Track,
but I can’t find this item on my Project menu.
Could you help ?
Thanks for advance.
PS : Actually, the problem is because I recorded my guitar in stereo, so right channel is empty and useless.


This feature is Cubase Pro only, sorry.

Okayyyyyyyyy. Thanks.