Time Machine Backup option unclickable

[The BOZ]

Hello to everyone,
in the configuration panel of my VM, the Time Machine Backup option is disabled so that I can't click the flag (for excluding the VM from the Time Machine backups).

Do someone know how to solve the problem?

Thanks very much!
TheBOZ

 

[Hans Balen]

You can exclude bakup of the vm in Time machine itself.

By clicking on options, and to add the vm to the list.