Hello @Kalpesh Prajapati,
Thank you for reaching out to us with your query regarding the menu settings for your multilingual site.
Our theme does not use Display location because it has a header builder that this option is unnecessary. WPML has a language selector for the menu translation http://prntscr.com/pz0ctr but it seems Gtranslate is limited and needs Display menu location. That’s why I ask you to contact them to clarify how to be in case you need to translate the menu if the theme does not have display location.
Best Regards,
Jack Richardson
8Theme’s Team