Deck 3 & 4 as primary - Layout setting

Hello!

I wanted to try DVS on my DDJ-1000 but I cannot change the Deck view to Deck 3 & 4 (the phono inputs) when I'm in 2 Deck mode. I have to use 4 Deck mode to see Deck 3 & 4. Where is the setting for this?
I use Rekordbox 5 because the newest version is very laggy on my Macbook Pro 2015 (Waveforms).

Btw. would anyone sell me their DVS license (for Rekordbox 5)?

Thanks in advance!