Splitting of clips

How can I split a long audio file into some clips?
I have tried this:

But no scissors is happen.

Thank you!

What you are trying to do is unclear. Are you trying to do this in the “edit” window or the “montage window”. Please give us some more info…

Thank you!
I don´t know if I am in the “edit window” or “montage window” and how I can get into the “montage window”.
The window, where the audio file is, is named “Audio Editor”.

WaveLab Elements or Pro?