While in "Managing VPS" menu click Deploy from template. You can use deploying if VPS has not been already deployed (State has to be "not installed"). If VPS has been deployed you are to destroy VPS first.
Choose template you need. Accept terms and conditions and click Deploy:
If everything is OK you will see Success message. State of you VPS will change to "Starting":
Deploying template takes some time depending on template you have chosen. Please wait for deploying to complete. State changes to "Running" when VPS has successfully started after deploying. It takes some time for OS to boot before you will be able to ping your VPS. However you can use "KVM console" when state is "Running".