2
Either by making the module visible to the group you want it to see. Further you need to edit the xoops_version.php file accordingly:
Quote:
// Menu
$modversion['hasMain'] = 1;
$modversion['sub'][1]['name'] = _MI_MYMOD_SMNAME1;
$modversion['sub'][1]['url'] = "mysubpage1.php";
$modversion['sub'][2]['name'] = _MI_MYMOD_SMNAME2;
$modversion['sub'][2]['url'] = "mysubpage2.php";
Or, you could just sortof hard-code a few links into your theme's template.
Unless you literally mean your module's index.php file in which case you should link to that other module from your code. Would be good practice to check wether that other module is installed in the first place if you are planning to publish the module so other people will use it.