Where to find Appearance settings in Multi-site?

I'm trying to add the previous and next month links to my calendar page (http://www.campus.aphroditeuniversity.org/calendar-new) and everything I've found in the support forums here talks about a setting under "Appearances" to disable styles and set template pages.

I cannot find this Appearance section in settings! The site is multi-site - is that setting found somewhere else in multi-site, or am I missing something?

Thanks! :slight_smile: