chance material like video Loft

Hello to everyone

I’m over some obstacles, skirted so many … it’s what happens when you learn for yourself.

Of’m currently stalled, I would like to address an issue: changing materials as demonstrated in the EU Loft Video 4 ARCH (Architecture Real-time - Unreal Engine 4 Archviz - YouTube), and many others … but I will rest getting here and there, finding information, already common open doors, anyway.
In this regard have not seen anything consistent, some lights about it, but nothing effective, some analyzes that without deeper knowledge or only create confusion …
Ideally such as Video on you tube in order to understand and open opportunities for other situations.

Thank you in advance the effort and availability of those could help.

Hi!

I not found any tutorials from scratch about this. Only this:

But i think you can start with tutorial about how to create inventory system.

Sorry for the delay,
I’ve been busy.
But, however it seems to me very confused and I do not have basis to unravel this kind of situation, because I have seen other situations and there are other possibilities, which makes it even more confusing … I’ll have to wait for a video on you tube or perhaps someone to explain by a toturial video exactly what I want.
I think when I starting I will be able to disassemble and then realize what and why.

However, thank you for your attention