Contact Smart Groups
Smart groups are the most versatile kind of contact group. If you find yourself consistently searching for the same criteria, Smart Groups will save that criteria and keep the list up to date for you, without you having to reenter the criteria every time.
With that in mind, it makes sense that to create a Smart Group, you need to go to the Contact Search page. From here, it's very simple - Simply enter your terms in the search form, click the search button, and when the page refreshes, you'll see a button in the top right to "Save Terms as Smart Group". Give your group a name, and you'll never have to perform that search again!
The sky is the limit for the parameters you choose. Perhaps it's important for you to always have an up to date list of "New" contacts from London who are assigned to you and have responded with "Over 1 Million" to your question "What is your budget for a new home?". The options are endless.