<p>Just email him asking how you would like permission to add the class. I usually ask them if I can meet with them in person, even though most of the time they are willing to give you a permission number then and there. </p>
<p>But always ask if you can meet in person and let them decide whether you should meet with them or if they can give you a special permission number via email. And always add a “thanks in advance!” :)</p>
<p>“Professor Pirog has his main office at 172 College Avenue, but has hours in Scott Hall 236 as well.” (They didn’t specify his office hours, but maybe you can ask him that in the email)</p>