An administrator creates multiple flavor mappings and names them as follows:
1. vCenter / Datacenter:datacenter-1 - cpu = 1, memory = 2 GB
2. AWS-West-1 / us-west-1 = t2.micro
1. vCenter / Datacenter:datacenter-1 - cpu = 2, memory = 4 GB
2. AWS-West-1 / us-west-1 = t2.small
Where would the administrator use those named mappings to allow users to select image sizes?