The timeline units for the right portion of the Gantt Chart view are displayed at the top of the chart. By default, displays two units of time. You can adjust these time units to display up to three units of time, and you can change it so that different time units are displayed. For example, you can zoom out to a bigger picture of your project’s tasks by displaying Years and Months, or you can zoom in to see the exact start and finish dates for your project’s tasks by changing the timescale to Weeks and Days. In order to Zoom In/Out, go to menu Project  - Zoom.