For zooming, it should be enough to call zoom!(scene, zoom_step) for your figure’s scene where it zooms in for values of zoom_step smaller than 1, and zooms out if greater than 1.
If you want to save the zoomed version of the plot to a file, you have to add scene.center = false before calling the save command, see: Saving Makie plot as is on the screen? - #2 by sdanisch