PC – To adjust display size on a PC, simple rt-click anywhere on the Desktop and select Personalization, Display Properties or just Properties. Then select the Display tab or link and you will see a “Resolution” slider. This tells your computer how large or small to make the screen and icons to fit your monitor. Your monitor determines the minimum and maximum levels and if you want a smaller, more detailed desktop you’ll need to upgrade your monitor appropriately.
Mac – On a MAC you will need to access System Preferences in the Applications rollout, then Displays, then the Scaled option allows you to adjust the resolution.