This is the main dashboard. (See image below)

The app will guide you through each step to get your device optimized.

To start you first scan, tap on the big "X" next to "Activate Protection Plan" or "Activate Scan Now" (Buttons may differ depending on the app version).  This will initiate the optimization and will scan your device for any malware, boost the device's performance and manage your applications. If you've already run your first scan, you can choose which section you'd like to run. 

Click on the image below to for the Antivirus Guide: