[1] Under the project directory create a file at "main/Kconfig.projbuild"

[2] Add the following to the Kconfig.projbuild file:
menu "Example Configuration"

orsource "$IDF_PATH/examples/common_components/env_caps/$IDF_TARGET/Kconfig.env_caps"

config I2C_MASTER_SCL
int "SCL GPIO Num"
range ENV ...