how to use in-repo-addons in the ember-engines?

I have created and ember in-repo-addon. Let's say say-hello. After that I created ember-eninge. Let's say users-engine.

In may main application I can directly use the addon as

//application.hbs

How to use it in the users-engine ?

//lib/users-engines/templates/index.hbs
 //It is not working also not throwing any error