You can manually select portrait or landscape by inputting the dimensions for your poster, or let PowerPoint orient your slide for you by inputting your dimensions and then selecting either portrait ...

Do NOT just select "Standard" or "Widescreen" setting in PowerPoint, the dimensions may not be appropriate for your specific poster size. To change the size of your slide: Open PowerPoint and click on ...

There are two core template structures in Microsoft Word: A single-copy template that sets a single design on a whole page (like a poster) or multiple pages (like a newsletter) Templates ...