On a Mac, click “View,” “Master,” then “Slide Master. ”

All changes made to this slide will effect all other slides in the presentation.

Select one of the alignment options (left, center, or right) from the “Paragraph” area to align your text. To change the color or typeface, highlight what you’ve typed and choose a different option from the text formatting area in the toolbar above.

To resize the new image without warping it, drag one of its four corners. To move the whole image, click inside the image and drag it.

In some versions of PowerPoint for Mac, Word Art is inserted by clicking “Insert,” “Text,” then “Word Art. ” To fine-tune the text’s appearance, highlight what you’ve typed and use “Text Fill” to change the color, “Text Outline” to change the border, and “Text Effects” to add effects like shadows and beveling.

Choose “Notes Master” if you’d like to view and print your presentation as a single slide-per-page situated above a lined area intended for note-taking. Choose “Handout Master” if you intend to print the presentation as a series of slides (with no note-taking area) on a single page.

Moving the header to another location on the Notes Master will not move it on the Handout Page—you’ll have to switch to the Handout Master on the Views tab if you want to reposition the header that style of printout. Footers can also be moved this way.

If you select “Handouts,” you’ll see options to change the amount of slides per page. The default is 6, but if you want people to be able to read the content on the page, you might want to go with 2 or 3. For the “Notes Page,” each slide will print on its own page with a series of lines below for note-taking.

In PowerPoint 2003 and earlier, click “View,” then “Header & Footer. ” If you really needed a uniformly-centered header on the top of the page, try using an image or text box instead.

This action will not propagate to the other slides in your presentation. You’ll have to move the footer on each individual slide.