Help for Aimeos

I noticed while I was testing the demo that depended the primary selector, I can only choose other selector options. I have an eCommerce site that will use all of the options with each of my selectors. Is there a way that I can implement this in the framework easily?

Do you mean all combinations of attribute, options, etc in selection products? That's already the case. You can combine all features you need.

Why does it not reflect this in the demo when I try to select different options with forcing me to choose only one when more than one is shown?

If you refer to the selection product, not all combinations are added to the database or have stock. Therefore, only you can only select the available ones.