How can a designer make a Parallax effect?

Question

Design

Tell me how to make a similar effect:
www.alquimiawrg.com/#/home
defatch-demo.com/themes/juster
If possible, any tutorials, scripts, etc.

Answer 1

Are we talking about a designer who makes a layout in a graphics editor? If yes, then show all elements in the layout, pass them to the layout designer separately in the required format (png, svg, etc.), providing comments describing the behavior. Next, the front-end specialist will configure the behavior as it should, and you're done.

Answer 2

in both examples there is no parallax effect

Answer 3

Draw first the first option then the second

Answer 4

Designer or layout designer?
If the designer, then what's the problem - to draw the elements. And rough sketch a couple of examples with different parallax.