The big circle with the vertical arrow at the bottom is a SCALE CIRCLE. It is important. The scale lock always goes out,so check the scale arrow and make sure it's aligned with the top of the circle. Do NOT move the arrow or the circle. Just UNlock the scales in format (at the top left of compare).
Draw to key points (as you can see here). Now zoom in and out using the days bar along the bottom to adjust. I usually lock the scale when I am close, then zoom all the way in, UNlock the scales and fine tune the circle and arrow aligment (click lock,unlock,lock,unlock until the arrow lines up with the circle in LOCKED position). The arcs should also work with the proper right angle scale. There should be direct arc swings eg. Start on the 1 arc and finish on the 1 arc OR indirect swings. Start on the 1 arc and finish on the .874 arc as an example. The tool that I use for inverted circles (the center in open space) is the fib speed resistance arcs tool. Just set the center anywhere in open space (close to the proper area) and anchor the radius leg to a real point. Now move the CENTER of the circle until you get a good curve fit. The other arc ratios can also be turned on when doing this. These ideas require precise set up. Don't just lay an arc or angle on the chart and expect proper results. The entire chart should be backtested to make sure arcs and angles work together. .