Unzip the downloaded file and place all those files into your Sims 4 Tray folder, which can be found at
Documents » Electronic Arts » The Sims 4 » Tray.
The Sims 4 Packs used:
- City Living
- Kids Room
- Get Famous
- Get to Work
- Island Living
- Cool Kitchen
- Cats & Dogs
- Outdoor Retreat
- Discover University