Missing tools in the Audio Part Editor

In the toolbox of the Audio Part Editor there is no scissors, mute, or eraser button. How can they be made to appear?

ADDED: it appears I’m opening the Sample Editor. In the Audio menu, “Audio Part Editor” is greyed out. It’s not available. How come?

Because you quite obviously don’ t click on an audio part, but an event. Start reading the manual and you’ll learn a lot of useful things…

You may or may not have noticed that the manual is quite good at naming things, but not at explaining things. I like to think that this forum fills the void.

This part of Cubase is a bit tricky. Watch a few videos on youtube. The tools are there, but when they show up and how to use them will take a little practice. Be patient and the system will fall into place.