Enable ssh without monitor

BPI-M2+/BPI-M2 Zero/BPI-P2 Zero Linux
1

Hi I have a banana pi zero and I was wondering if and how I can enable SSH without a monitor

2

https://www.armbian.com/banana-pi-m2-plus/ -> FAQ

“BASH or ZSH shell, standard Debian/Ubuntu utilities. Features can be adjusted with menu-driven utility. Login is possible via serial, HDMI or SSH.”