T he yellow Set-up menu is where you’ll find a range of ‘housekeeping’ settings and more technical tweaks for the camera itself. You’ll find the screen brightness adjustment, sensor cleaning and firmware update functions here, for instance.
While more recent Canon EOS bodies have their Wi-Fi connection options in a separate purple tab, older bodies have that function buried in the Set-up menu. Rather than have an orange set of tabs for Custom Functions, beginner-friendly bodies with a more limited range of customization options tend to have a Custom Functions sub-menu within the Set-up section too.