To create a Hub, simply open the menu on the left (by clicking your name) and select "Create a Hub" button.
From there you can choose your Hub name, Mix display name, Avatar, and Location. The default Hub Location will be "Qzzr" which will make your Hub a Top-Level Hub. However if you already have a top-level Hub and want to create a child Hub, you can use the dropdown to change it from "Qzzr" to any other Hub available to you.
Return to the Hubs overview page.