In this case, you should add all possibilities as configurable options.
How to configure and adapt Aimeos based shops as developer
Forum rules: Always add your Aimeos and PHP version as well as your environment (Linux/Mac/Win)
I created every possible scenario and I am not being able to see beyond the first selector and the first selector only has one option in it. Please reference my images that I have uploaded earlier as a reference. I am trying to find out why I am not being able to get the other selector and only one value in the first one.
Please have a look at the screenshot where you have to add the product options. Replace the ones in the screenshot with your "round", "square", "vertical" and "horizontal" attributes: