how do I turn on the autosandbox feature

Avast Free Antivirus / Premium Security
1

Hello,
I recently purcahsed the avast internet security and can find the auto sandbox tab.
I found the sandbox tab , but there is no auto sandbox tab.
Any help ?

2

The AutoSandbox is enabled by default and its settings are found in the File System Shield>Expert Settings.

3

Thank you !