A very common idiomatic usage for OP's context would be...
I visited their factory yesterday. They showed me the HMI simulation then and there.
Note that as a Brit I was initially going to write there and then. But because I knew both sequences were in use, I checked this NGram, which clearly shows that then and there is and always has been far more common overall.
So it turns out that there's a significant US/UK usage split here, but I doubt many people on either side of the pond would know that, or think there was anything unusual if they encountered the sequence that's less common among their fellow countrymen.
I should also add that in most contexts where the expression would be used, where implies when and when implies where (since the "referent" is usually a specific time and place). Using both is thus a device to add emphasis, which is often amplified even more with right there and then (About 160,000 results) or right then and there (About 27,300,000 results!).
It's interesting to speculate why Brits in particular should have decided about 50 years ago that there should come before then (and by implication, be more contextually important), even though they also had the opposite preference a century ago.