Creating complex terrain model (German version)


i'm currently doing the course "Using and Editing Terrain Models" from the Learning Path 04. On page 46 of the 2020 PDF you should build a complex model out of two referenced models. I use the programm in Germany on German and as i followed the instruction i could not find the "Finish"- or the "Cancel"-Button. They are just not there in the german version. Am i doing somthing wrong, or is the programm really missing the Buttons?

Thanks for any help

A. Theißen