Customize setting (e.g: manufacturing settings)

Hi everyone,

I am trying to add custom field into setting doctype (e.g: manufacturing setting). But I am not sure how to achieve this.

To customize normal doctype, I select the customize option on the UI and export to json file and sync on migrate to persist the customization.

However for setting doctype, I can not find the “export customization” option. Hence, how do we customize the setting doctype to our need ?

Best regards