in server/src/jetbrains/buildServer/queueManager/server/ChangeQueueStateAction.java [62:69]
public boolean canProcess(@NotNull final HttpServletRequest request) {
final SUser user = getUser();
return myResponsibility.canProcessUserDataModificationRequests()
&& user != null
&& user.isPermissionGrantedGlobally(Permission.ENABLE_DISABLE_AGENT)
&& request.getParameter(PARAM_NEW_QUEUE_STATE) != null
&& request.getParameter(PARAM_STATE_CHANGE_REASON) != null;
}