Hey joe, you can edit posts …top right of post I know this because I too am a newbie, wrote a post asking all sorts of questions…and worked out I was …well… talking utter rubbish, so I deleted it 
I’m not for one minute suggesting your post was like mine, but you do have the option to delete the whole thread if you wish.
Good luck with daddy cubase, can’t help you cause I only have the baby version
This is the edit btw, just to double check you can. Option of edit, delete a ‘!’ for some reason and ‘quote’ all in the top right of the window (on iPad)