The Configurations tab is used to create and manage virtual machine configurations. You can set the number of vCPUs in a virtual machine, and select a service package. After the configuration is created, it can be assigned to a VM entitlement. See Creating VM configurations.
When you disable a VM configuration, the VMs that are using the configuration are no longer entitled to consume points. Use caution when disabling configurations or stopping VM entitlements, as this will impact the performance of the virtual machines. Disabled VM configurations can be re-enabled.