Hello!
This is happening because this is a Built-in policy. You cannot edit this policy.
I don't know why, but, the built-in policy only enables the V&PM resource, but, it is necessary to configure the scheduler, and, to configure the scheduler, we do need a new policy.
I recommend you to create a new "Common features" policy from scratch, and then, you can configure the scheduler.
Let me know in case of any doubts.
BR,
TS
santos-_t received kudos from j-gray in New Vulnerabilities and Patch Management