To create an anti-affinity group:
Click the Servers and VMs tab. Select a server pool in the navigation pane.
From the Perspective field in the management pane, select Anti-Affinity Group from the drop-down list. Click Create New Anti-Affinity Group...
in the perspective toolbar.
The Create Anti-Affinity Group wizard is displayed.
Enter the anti-affinity group information:
Anti-Affinity Group Name: Enter the name of the anti-affinity group.
Description: A description of the anti-affinity group.
Click Next.
The Select Virtual Machines step of the Create Anti-Affinity Group wizard is displayed.
Select the virtual machines to include in the anti-affinity group and move them from the Available Virtual Machines column to the Selected Virtual Machines column.
Click Finish.
The anti-affinity group is created and listed in the Anti-Affinity Group table in the management pane.