User can run at any time validations manually from the validation windows. He can run one only or all from a category (like pre-deployment)
Done upstream
There is no way to run a category any more, but marking as Verified anyways.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHEA-2016-2948.html