You can group your contacts into a list for marketing purposes by navigating to the "Lists" section in the taskbar.
In the upper right-hand corner click the "Add List" button to create a new list.
This will take you to the "Create List" screen where you can start piecing together your group.
You can filter your contacts based on Price Range and Region. Once you have your contacts sorted, check the boxes to the left of the names you wish to include on the list.
Make sure you name your list with something relevant to its use.
Click the "Create List" button in the upper right-hand corner of the screen to save your list in the system.
These saved lists can later be used in e-mail campaigns and other marketing efforts rather than selecting contacts each time.