Zooming and Scrolling in the Tempo Editor To zoom in vertically in the Tempo Editor: Click the Tempo Editor Zoom In button (“+”). To zoom out vertically in the Tempo Editor: Click the Tempo Editor Zoom Out button (“–”). Zoom In and Out buttons in the Tempo Editor To scroll vertically in the Tempo Editor, do any of the following: Click the Scroll Up Arrow to scroll up. Click the Scroll Down Arrow to scroll down. Drag the Scroll bar up or down.