With web viewer using JS and CSS?
That sounds like your best approach. In theory, you might be able to do this with a fileMaker layout and a lot of layered objects with "hide object when" settings that hide all but just a few for any given value, but it would be very complex and challenging to set up only to produce a crude approximation of what you want that may update very slowly each time you select a different portal row.
But I'm not the one to help you with the Java Script needed for this...
i get your meaning but as you said, this would be really complex and the performance may be very slow.
in fact i know nothing about Java Script and CSS, but i really want to achieve this since I think it can streamline the workflow for those that need to follow many order at a time. And management would easily get a overview of those orders and figure out what went wrong.