do you need more than one sdkconfig.defaults?

[wegunterjr]

I am trying to use sdkconfig.defaults but having some challenges understanding where it should go?
Do you just need it at top level, or in the main/src folder or somewhere else?
Can you have more than one?

[chegewara]

Examples?

https://github.com/espressif/esp-idf/tr ... _mesh_node