Follow the steps below to create a horizontal scrolling text effect in PowerPoint: Launch PowerPoint. On the Home tab in the Shapes Galley, select the text box, then draw it onto the slide. Enter text into the text box. On the Animations tab, select the Fly In animation, then click the Effect Options button and select the From left.

On the Format tab, go to Size and enter exact dimensions for the Width and Height. Right-click the text box, select Format Shape, and adjust the size on the Size tab. For horizontal scrolling, reduce the width of the text box. For vertical scrolling, reduce the height.

View - Toolbars - Control Toolbox - click on Text box button. Drag with your mouse the size box you want. Click on the properties button, click on MultiLine and choose true. Click on EnterKey behaviour, change to true. Click on Scrollbars and change accordingly, if you want both horizontal and vertical scrollbars choose 3.

On the shortcut menu, select Format Shape. In the Format Shape pane, click Size/Layout & Properties. Under Text Box, select the option that you want in the Text direction list.