How to change a plugin's value using Config File after packaging?

I can successfully change a value of my plugin using its “own .ini file” (Default[PluginName].ini) when using the editor. However, I can’t find the “PluginName.ini” file in the package version to change the value.

So, the problem is: Where I place my “PluginName.ini” file?

I think that others may have this question too.

Sincerely, HighRender.