Plugin to Enable "stacking" of sidebars…

I have the Avada theme for a site. I’d like to know if there is a reliable plug-in or method available so that I can “stack” multiple sidebars/widgets on my pages/blog — or am I bound by the Avada theme?

I’m not a coder; learning “on-the-job.” Would very much like to find a viable solution as soon as possible. This said, I certainly want to avoid potential issues with my existing sidebars/widgets which can occur for various reasons from time-to-time.

Instead of just adding to the existing sidebar (would like to add email form, product widgets, etc.), I’d like to know if sidebars can be stacked and, if so what should I do to make it happen.

Thanks so much in advance for your help! 🙂