interlligencemartixcreator

hello, I'm new to using affinity and don't know much about it I was hoping someone would know what tools and features I should use to create a diagram I saw in a youtube video someone using the shape creator, and there appeared to be a snap to grid to make the placement of your shapes (in my case circles) exactly precise, I noticed, however, he was using the mac version, I have the windows version. does the windows version not have the grid? I also need to be able to use a grid for making the text in my diagrams align more accurately. I'm trying to start a business of sorts, and having diagrams that look professional enough to have precise alignment and is of upmost importance to me there's two examples below of what I'm working on through paint. notice the circles aren't exactly the same size, and the position of the text on the diagrams change slightly since I'm having to just eyeball all of it. is there a toll that would allow me to make all the text allot more exact in the location so the details, and placement of the texts in the diagrams could look more standardized? (so that all my diagrams I make would look be similar in the precision of the placement of the text)