Show option only when logged with administrator site

I everybody.

I want to show an option only to the site administrator. In ojs 2.4.x y get administrator site with
$templateMgr->assign(‘AdministradorMaster’, $roleDao->userHasRole(0, $user->getId(), ROLE_ID_SITE_ADMIN))
later y check variable $AdministradorMaster for show or hide option in template.

I need to do the same in OJS 3. but I don found tpl file for modify. please Can you tell me what is the tpl file that is usually part of this part so I can modify it?

Screenshot_20180514_102830

Regards
Cristian

I found the solution

File: controllers/grid/issues/IssueGridRow.inc.php …> function : addAction → new linkAction

//$AdministratorMaster
        $roleDao =& DAORegistry::getDAO('RoleDAO');
        $sessionManager = SessionManager::getManager();
        $session = $sessionManager->getUserSession();
        $user = $session->getUser();		
        $AdministradorMaster=$roleDao->userHasRole(0, $user->getId(), ROLE_ID_SITE_ADMIN);

		import('lib.pkp.classes.linkAction.request.RemoteActionConfirmationModal');
		if ($issue->getDatePublished()) {
			import('lib.pkp.classes.linkAction.request.AjaxModal');				
			
			
			if ($AdministradorMaster){
			$this->addAction(
				new LinkAction(
					'unpublish',
					new RemoteActionConfirmationModal(
						$request->getSession(),
						__('editor.issues.confirmUnpublish'),
						__('editor.issues.unpublishIssue'),
						$router->url($request, null, null, 'unpublishIssue', null, array('issueId' => $issueId)),
						'modal_delete'
					),
					__('editor.issues.unpublishIssue'),
					'delete'
				)
			);}