2
Hello, are you talking about this tab ?

On my website, anonymous can't see it.
Check if you have this code in : yogurt/templates/yogurt_navbar.html (line 41 to 43)
le="color: #000000"><?php <{if $isOwner}> <li <{if $section_name==$lang_configs}>class="tabs-selected" <{/if}>> <a href="configs.php?uid=<{$uid_owner}>"><span><img class="yogurt-nav-bar-icon" src="images/configs.gif" /><{$lang_configs}></span></a></li> <{/if}>
The tab displays only for the owner.
For you second question, try this :
In modules/yogurt/xoops_version.php, look for
le="color: #000000"><?php $modversion['hasMain'] = 1;
Add this code after :
le="color: #000000"><?php if (is_object($xoopsUser)){ $groupsok = $xoopsUser->getGroups(); } else {$groupsok=99;} if (!in_array("3", $groupsok)){
And after
le="color: #000000"><?php $modversion['sub'][9]['url'] = "configs.php";
Add :
le="color: #000000"><?php }