i have reviewed the VCF documents to try and locate the detail around managing the VCF vSAN Witness Appliance to see if its supported or not: https://docs.vmware.com/en/VMware-Cloud-Foundation/index.html however cannot locate the detail.
If the above are not possible, then how are you managing the vSAN Witness Appliances and the Physical ESXi host that the appliance runs on?
1. Yes, it is documented here: https://docs.vmware.com/en/VMware-Cloud-Foundation/4.5/vcf-admin/GUID-CB6227AB-1D38-4822-B8D9-34F97F...
3. Same with VI WLD as Management WLD.
The Physical ESXi host that the appliance runs on must be managed by a different vCenter than the ones deployed by VCF. The vSAN Witness should be running completely independent from the cluster it is being a witness for, including all networking.