What is the App Lock and how do I use it, please?

General
1

Can someone explain what the App Lock is and what it does, please? Thank you

2

First, I’m an Avast user and not an Avast Team member.

Given you have posted in the General sub-forum, there is no context in why or where you wish to do this.

So I googled your question

Check this out
What is the App Lock and how do I use it