There is only one layer, and it is based on Norman layout.
Looking for multiple-layer layouts?
It is CTL_T(KC_ESC) and it works this way:
CTRL/ESC to send ESC.CTRL/ESC to use as CTRL.SHIFT and right SHIFT and then tap N.First you need to install few brew packages.
brew tap osx-cross/avr
brew install dfu-programmer avr-libc teensy_loader_cli
Then you can clone this repository, make and flash your ErgoDox.
git clone https://github.com/romanzolotarev/qmk_firmware
cd qmk_firmware/keyboards/ergodox
# Optionally tweak ./keymaps/romanzolotarev-norman-osx/keymap.c
SLEEP_LED_ENABLED=no LAYOUT_ergodox=romanzolotarev-norman-osx make teensy