As described here on can change the number of tty. However how can I configure it that I have only tty7,...,tty10 (and tty1 to tty6 are disabled)?
I usually use only tty7 upwards because pressing Ctr+Alt+F7 is easier than pressing Ctr+Alt+F1 for example from an ergonomic point of view. So tty1 to tty6 are redundant for me.
I am working on ubuntu 18.04 which uses systemd.