Even though I don’t have any experience in the field yet, doing research on this topic was interesting. There are a couple of steps that have to be taken into account before building a Gantt Chart. First we have to identify the steps needed to complete the projects. Then we identify milestones within the projects. Next we identify the expected time required to complete each task, and the sequence of tasks and the order of precedence of tasks. Now we draw a horizontal time axis on the bottom of the page and select a proper time scale to represent the length of tasks. Then we prepare a column on the left side of the paper, and write down each activity and milestone of the project in their corresponding order of occurrence.Activities or milestones that occur at a specific point in time represent them using a diamond under the time the activity must happen. Activities that occur over a determined period of time draw horizontal bars, or an empty rectangle starting from the first day the activity will take place and finishing the day the activity ends. Do not fill inside the rectangle. Then each activity or task must be listed in the Gantt Chart. Finally you fill up the diamond or the rectangle as each activity is being performed, then use a weight or plumb as a vertical marker to illustrate that actual time and progress of the project.
After listing the simple steps that make the process easier; I think you just have to do your research for all the activities or actions that have to be taken in the process then put them on a timeline. The better your research is the better your Gantt Chart is going to be.