Collection Feature

I am exploring the new Collection feature and have read the available documentation.

Manage collections (collibra.com)

However, I have come away rather confused on how Collections is supposed to work. It appears you can add some assets to a collection (reports, columns, etc.) but not others (business terms, data policies, etc.). We are not currently using Data Marketplace. Does the ability to add assets to a collection only pertain to catalog assets? Is it available for business and governance assets?