How to Change Gantt Chart Timescale in Microsoft Project

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Here’s how to do it: 

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1. Let's start by opening your Microsoft Project file and ensuring it's in the Gantt Chart view.
2. Navigate to the 'View' tab in the ribbon at the top of the screen.
3. Look for the 'Zoom' group on the right side of the ribbon. Find the 'Timescale' dropdown.
4. Click on your preferred timescale option from the dropdown menu. You can choose from options like Days, Weeks, Months, Quarters, or Years depending on how zoomed-in or zoomed-out you need your project timeline.