To be added to your Widgets, your purpose needs to be included into your Configuration Tree. If you want to create a new purpose, please read this article.
Add a purpose into Configuration Tree
Screenshot: Configuration Tree page with Add a purpose focus state
⇒ A new page opens. This is where you can find all your purposes.
Screenshot: Add purpose page with one or two real purposes selected
You can now find your purpose(s) in your Configuration Tree tab.
Edit a Purpose into Configuration Tree