The Group box is the second highest priority, in my mind, as there are 3 ways to reference a server entry by name: The Description, the Group (generally Network name by convention), or the Address.
For technical reasons, you should *always* place every server into a Group, even if it's a group with only one server inside it. Servers without a group are in fact a group (of ungrouped servers), and there are a series of inconveniences that occur if left ungrouped.