Use the zoom tool on the Gantt chart to increase or decrease the range of dates shown on the timeline.
Navigate to a selected folder, project, or space and switch to Gantt chart.
Click the + button in the upper right-hand corner to zoom in and see a smaller date range.
Click the - button in the upper right-hand corner to zoom out and see a wider date range.
Click the button next to the - button to select the zoom level: years, quarters, months, weeks, or days.
You can also double-click the timeline to zoom in and Ctrl + double-click (⌥ + double-click for Mac users) to zoom out.