Location of helper app

I need to place the ExifTool helper within my app bundle. It is composed of an Unix executable, and a lib folder containing the stuff it needs to run.

Several times, Sam posted the place where helpers are supposed to go, but of course now that I need it, no search helps.

If I remember right, Helpers can be placed in MacOS. Sam, is it OK ?

TIA.

https://developer.apple.com/library/content/documentation/CoreFoundation/Conceptual/CFBundles/BundleTypes/BundleTypes.html#//apple_ref/doc/uid/10000123i-CH101-SW13

https://developer.apple.com/library/content/documentation/Security/Conceptual/AppSandboxDesignGuide/AppSandboxInDepth/AppSandboxInDepth.html

The “/Contents/MacOS” folder is a good place to start, also “/Contents/Helpers”.

Thank you Norman, thank you Sam.