Does anyone have a plan that would show the layout of the cemetery and where the various sections and plots are located ?
I do, but God only know where it is.... plots only for the sections that were relevant to me,
You can easily get it from the town council in any case, or whatever it is called nowadays.... there is an office dealing with the graveyard. If you know that someone is buried there, and know the date of death, then it is quite straightforward to get them to look up the exact burial plot. From which you can also find out who else is buried in the same plot (the records were kept by person and by plot).
My grandfather lived in that graveyard in his youth in the 1910s. I would visit his sister who still lived there in the 1960s.