Unable to view the complete list of virtual machines in the inventory when attempting to add them to DRS VM Groups.
An issue identified with the vCenter 8.0 user interface.
The issue has been resolved in vCenter version 8.0 Update 3e.
As a workaround can use PowerCLI to create the VM Groups
https://blogs.vmware.com/PowerCLI/2017/06/spotlight-new-drs-cmdlets.html
Get-DRSClusterGroup
Retrieves DRS VM and host groups from a DRS-enabled cluster.
New-DRSClusterGroup
Creates a new DRS VM group or host group in a specified cluster.
Example:
New-DRSClusterGroup -Cluster Cluster01 -Name "WebTierGroup" -VM $vmList
Set-DRSClusterGroup
Modifies an existing group (e.g., add or remove VMs or hosts).
Remove-DRSClusterGroup
Deletes a specified DRS group from the cluster.
Get-DRSClusterRule
Retrieves existing DRS rules (like affinity/anti-affinity rules).
New-DRSClusterRule
Creates a new DRS rule for VM-to-VM or VM-to-host relationships.
New-DRSClusterRule -Cluster Cluster01 -Name "KeepWebTogether" -Enabled $true -KeepTogether -VMGroup $webVMGroup
Set-DRSClusterRule
Updates properties of an existing rule (e.g., enable/disable).
Remove-DRSClusterRule
Deletes a DRS rule.