Setting access rights for Google Script

I have a file upload form in my table. After pressing the button, a form opens, I choose a file and the script moves it to the desired folder.
The problem is that in order to activate the script, I need to give it permission to work with all the files on my disk.
Is there a way to give the script permission to run in a specific folder?

I know about the function @OnlyCurrentDoc, but as far as I understand it will only restrict access to the table, not all files.

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