In the qmk repo, (qmk/qmk_firmware), you can find a udev rule at qmk_firmware/util/udev/50-qmk.rules which you can move to /etc/udev/rules.d to allow user access to the keyboards.
In the qmk repo, (qmk/qmk_firmware), you can find a udev rule at qmk_firmware/util/udev/50-qmk.rules which you can move to /etc/udev/rules.d to allow user access to the keyboards.