Menu ‚Fenster‘ (Windows?) did not mark the command ‚Pfade‘ (‚Path‘ ) and did not show a Bedienfeld.
I tried to install PS on an older OS, though it was to old.
Coming back I must log in and all was correct. Though the Bedienfeld was stashed behind others.

So the problem is solved.
Other pictures for the languages:
Pfade is german and means paths


Choosing the command or option did not induce the √ sign.
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So all works now fin and I thank you very much efforts!