In Contacts you have the ability to Favorite contacts that you meet with often. This allows you to not only organize them within your Contacts but also so they appear first when you go to add contacts to a meeting.
For example, if you want to have a new BookNow meeting with a contact you meet with often, then you can simply click to add a new contact to a meeting and your Favorites will show as soon as you click. This is a quick way to not even have to search for your Favorites when you are adding them to a meeting!