To create a VPS, on the homepage select your preferred VPS option and click "Buy Now." Alternatively, in the Client Area, navigating to Store - VPS will also allow choosing a desired VPS option. If logged into the Client Area, it is also possible to access this from Services - Order New Services. These will progress to the "Configure" page, to allow you to change how the VPS will be setup. Once this has been configured, clicking "Continue" will request payment details for the VPS option chosen previously.
Once payment has been taken, the VPS will be created and can be managed as desired.