When using VCF Installer 9.1, there is no UI to select VCF Operations appliance size to set it "Extra large".
During the initial wizard, VCF Installer offers Size Options for the entire VCF environment, but there is no UI to specify VCF Operations to "Extra large" including in the latter wizard.
VCF Installer 9.1
This is expected behavior. Currently, UI doesn't provide an option to select VCF Operations appliance size individually.
Specify the VCF Operations appliance size manually following by the below steps:
:::
"vcfOperationsSpec": {
"applianceSize": "xlarge",
:::