In this example I will use Word, but you can follow the same steps for PowerPoint also.
First, click on the Microsoft Office Button in the upper left hand corner and choose "Word Options". Select the Save tab on the left.
Under the "Preserve fidelity when sharing this document" section, first choose your document.
Then check the box for "Embed fonts in the file", and "Embed only the characters used in the document". Now when you save that document, the fonts will be embedded for everyone to see.