Thank you for the feedback. Here is a screenshot from one of my projects. I design surveys and deal with groups of response bubbles that I need to place so that the center of each bubble is exactly on top of the intersect of the guides. This is a screenshot from Illustrator.
And here is a screenshot from Designer. I can position an individual bubble perfectly over the guides. Designer shows me a red and green line when I have centered my object, which is exactly what I want to do. But when it comes to positioning a group of response bubbles I have to eyeball the positioning of my