How can I add an extra field for "Custom menu link name & URL"?
I tried to add/edit the \cpg15x\lang\english.php in section for admin.php with additional 'custom_lnk_name' and 'custom_lnk_url', but didn't help.
If you want more than 1 custom menu item, you have to modify your theme. Please search the board if you don't know what exactly you have to do.