You should be able to right click on the view in the drawing and click on "break alignment". Just like with any view that is mated to another one.
Hello George, and welcome to the forum. You can right-click on a drawing view and choose "Replace Model" from the drop-down. That's a fairly recent enhancement that allows one model to replace another in a drawing view. Is that what you want?
Edit: After seeing the post from Peter Benoit it's certainly possible (maybe even probable) I misunderstood. In addition to what he posted, for the future if you'll hold down Ctrl while initially placing the section view it will automatically break the alignment and you can place it where you want. That way there's no need to go back and break the alignment later.