Promoting whole albums. Adding albums to your Featured albums makes them more accessible. As a layout section, you can choose to display it on your Homepage and/or any category pages.
Settings for Featured Albums/Featured Photos are managed separately from your Album Settings:
You can very easily add new Albums/Photos using the Tools menu or, especially for bulk management, in the Organizer. Removing such Albums/Photos by clicking the cross doesn't influence the source Album/Photo in any way.
For more, see the Organizer - Featured Albums and Photos article.