Dolby Atmos is the name of an immersive audio technology, enhancing entertainment experiences like watching movies and listening to music with richer sound.
Turn on Dolby Atmos on your Lenovo Phab 2 tablet following these instructions:
Step 1: Open the 'Dolby' app.

Access the 'Dolby' application
Step 2: Enable the Dolby feature.

Turn on the Dolby feature
Step 3: Select the entertainment option.

Select the entertainment option
Step 4: Choose customization according to your preferences.

Choose customization according to your preferences.
That completes the setup process. Wishing you success.
