INSTRUCTIONS To install an app, follow these steps:
1. Navigate to Settings > Security.
2. Scroll down to "Unknown sources".
3. Allow.

The app will be added to the app list. From there you can add/move it to your home screen or active screens the usual way.

INSTRUCTIONS To install an app from your iPhone or iPad using Safari follow these steps:
1. From below click on the app you want to install.
2. Next, tap the button immediately to the right of the address bar. It looks like a box with an arrow coming out of it .
3. In the second row of buttons you will see "Add to Home Screen" It has a big plus sign in the middle of the button .
4. After you tap this button, a window will appear to download and install the app.
5. Tap the Add button in the top-right corner of the window to complete the task. Once you tap the button, Safari will close and you will see the app on your home screen.