Comment by MarkCole

Btw since Raspberry Imager version 1.6 there is a hidden advanced options menu. It can be opened with ctrl+shift+x. This GUI allows you to set WiFi and SSH options. So you don't even have to manually create the /ssh and /wpa_supplicant.conf files.

https://www.raspberrypi.org/blog/raspberry-pi-imager-update-...