It depends on what you mean by 'moved'. If you mean changing the layout (positioning on screen), then you cannot move it, because the tool is designed to auto-layout the pipeline. This is a feature. Similarly, there isn't a lot of flexibility in terms of 'picking up' a component and dropping it elsewhere in the pipeline. It's been a while since I used the tool, but I think it is possible to drop new components 'in front of' the target component on the pipeline, which will allow you build around the existing one.
I have an idea! Thanks!