Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

keymap.c
#include QMK_KEYBOARD_H

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    [0] = LAYOUT(
        LSFT(KC_O),
        LSFT(KC_R),
        LSFT(KC_U),
        LSFT(KC_SLSH)
    )
};