Start by accessing the side menu and selecting "Service Desk." Within the Service Desk section, locate and click on "Projects."
Here, you'll find a list of projects that you either created or have access to. Choose the specific project to which you want to add milestones or tasks.
To add tasks to a milestone, open the milestone dropdown and look for the "Task +" option. Click on it to create new tasks.
After adding a new task, click on it to open a new window with a modal. Provide a description for the task. On this screen, find the "Assignees" button and click on it to assign individuals to the specific task.
If you wish to add a new milestone after completing a task addition, return to the previous screen and locate the "Add new milestone" button. Click on it to create a new milestone, and you can proceed to add tasks to it.
That's it! You have now successfully added milestones and tasks to your existing project.