This is my super quick tip to for reshaping the viz without altering the size of the filter. If we look at the simple viz below:

If I wanted to narrow the above viz for whatever reason maybe say for resolution considerations, normally I would go to the right edge of the bar chart and click and drag it to the left. The downside is the vertical sub-category list on the left acting as a filter in this example would stretch to the left so that there is no gap between the bar chart and filter.

By holding down Ctl and using the arrow keys – in this case left – I can move the chart but the filter does not move. I can hold Ctl right and move it back and also go up and down as shown below.

So there you go a super quick and easy tip for moving around the chart without affecting the filter or any legends. Thanks to Hash for showing me this.