Can I change the folder structure after exporting for web?

so, I've made the game and exported it for the web. The problem is my client asked me whether I can change the structure or not, so if you see the below image

my client wants the index.html file in the jspsy/program folder, the css in the jspsy/css folder, and the image in the jspsy/program/image/game_name folder

I don't think the exported folder's structure can be changed and I already told the client that it might be hard to do so. I just want an opinion from you guys who maybe have this kind of situation before. If it really can't be done, I'll have to talk to my client.

Thanks in advance.

I can't find the "Export file structure" in the advanced section in project properties.

Or maybe I just misunderstand you when you said the project's properties?

Ah, sorry, I forgot that option is only in the latest beta releases. It's not there in the latest stable release, but it will be there in the next stable release, which should be out in the next month or so.