OGP-Website/modules/subusers/navigation.xml

<navigation>
  <page key="add" file="add_subuser.php" access="user" />
  <page key="del" file="del_subuser.php" access="user" />
  <page key="adduser" file="add_subuser-exec.php" access="user" />
  <page key="submanage" file="submanage.php" access="user" />
</navigation>