Some people are confused between illustrators and InDesign. It should be remembered that these two may need both works in magazines, but illustrators may also work in newspapers and books. They are in charge of providing the drawings that will make it easier for people to determine what is being described.
Pictures and drawings will always make what you are reading more enjoyable. In-design refers to the arrangement of the layout that is needed to make sure that the magazine will be read correctly. If the layout is not arranged precisely, it will be confusing for people to know which portion they should read first.