The Service Splitter is a feature that enables you to create multiple services under one Billing package.
You can access the Service Splitter by going to your service's managing page and selecting Basic-> Splitter

The service can be split by clicking on Split, entering in the desired memory and storage quantities then clicking Split this server. Whatever memory and storage quantities you provide for the new service, will be deducted from your service labeled Primary.

Should you wish to delete a service associated with the Service Splitter, simply click the bin icon next to the service on the Tools -> Splitter tab and you'll get a confirmation pop-up where you can delete the service. When a service is deleted, the memory and storage quantities from the service will be returned to the Primary service.