Path relative to the app and not the data source (the google sheet). Am I right ?
In that case, Is it ok to move the app to any desired folder in google drive other than the default location (appsheet folder in the root of the google drive) ?
Use the tricks from @Aleksi , hitting Shift+Z to generate the short-cut from one folder locating outside default appsheet app folder to create shot cut inside default folder, then set the path to that one.
But the app is able to read the files from outside the appsheet folder.
My Product table has an image column , where I provide the path to my images that are located in folder that is relative to my sheet (datasource) and not the app folder and it renders the images perfectly in the views.
So is it like, it can read the files from anywhere in the Google Drive but when it comes to saving, it saves only in the appsheet folder ?
I would use an appscript on the sheet that fires with a trigger on update.
The appscript could then for example use the cell values or just look in the apps jobcards folder for new pdfs and copy them to the external folder.