Missing Elements in creating Repo Group

Hi I am following the learning path at
Configuring Group Repositories - Sonatype
When the presenter creates a new Repo Group, I do not see the elements

1 - Version Policy
2 - Layout Policy
3 - Content Disposition
which are available in my Nexus OSS setup as follows

which are missing in the Presenter’s screen

So is this because this course is based on an old version of Nexus? If yes, what is the significance of each one of those elements and how they should be used?