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Enabling Template Mode for the Parent
You can avoid inadvertently deleting the parent of linked clones by designating the parent virtual machine as a template. To designate a virtual machine as a template, enable template mode in the virtual machine settings editor:
1. Select the virtual machine.
2. Choose VM > Settings
3. Select Options
4. Click Advanced
5. Select Enable Template mode (to be used for cloning).
6. Click OK.
With template mode enabled, a virtual machine cannot be deleted or added to a team, and the virtual machine's snapshots cannot be deleted.