In "Expiration Policy" settings, the use license renew period will not be saved unless you add at least one user or group ...

In "Expiration Policy" settings, the use license renew period will not be saved unless you add at least one user or group and also assign at least one right to that user or group. To continue without saving the use license renew period, click Yes. To return to the page and add a user or group and rights, click No.