I have installed the core extension bundle - everything ok. After I have created the first boxes, I can not see this unfortunately on my side. When reading the documentation, I have now determined that I should register something. It seems to me that I have to use php code for it - I am totally blank with PHP code and am very unsure how I should proceed now. . .
I would be grateful for a little bit of support in this case.
Thanx a lot
P.S. I could not install the extension include / exclude. There was a fatal error.