How do I add Avast 2015's Scanner to IDM 6.23 build 10?

I wanna know how to add avast scanner to IDM so that it will automatically scan the downloaded files. I am using Free version of latest Avast!

In short, you can’t. You need one of the paid versions.

Has something changed ? Many years ago, I used to add it to Gigaget. Wish I could remember the setting.
Here’s an old post for using Avast with Gigaget don’t know if it still applies:
https://forum.avast.com/index.php?topic=49331.msg416843#msg416843