Fades greyed out?

Latest Cubase 12 Pro,when I select the end of some audio and select Audio,Fades,it is all greyed out.

How do I enable Fades?

LOL ,the track was hidden under a lane.

Most likely you have an Audio Event that got converted into an Audio Part. I’m not at my DAW for the exact command, but I think under the Audio menu it is something like Dissolve Audio Part