Zoom in or out in Timeline View
You can change the zoom level by moving the slider to the left or right. Alternatively, you can simply hold the Shift key and scroll up and down with your mouse to zoom out and in.
To have an overview of all the tasks on the Timeline, press the “Preview” button and get a bird’s-eye view of the whole Timeline and ease the navigation. Move the cursor over the preview area to see the part you need on the Timeline. This feature is particularly useful when you have lots of projects that do not fit on one screen.