I hope you are well today and thank you for your question.
We have to develop custom code to achieve it.
Could you please share me your site URL where it’s displaying and share me screenshot displaying how you want it to display so that I can help you to achieve it?
Thank you, please see screenshots. The site is still a work in progress visually.
As mentioned and as you will see I would like the menu navigation bar to be below the image slider instead of above. I have PM you site details.
I understood what you want to achieve.
To achieve this, you have to develop custom code in the child theme of Jevelin theme header.php file.
Developing custom code for custom functionality is beyond the scope of support that we provide here. Please see https://themeforest.net/item/jevelin-multipurpose-premium-responsive-wordpress-theme/14728833/support
If you are not a developer then you can consider hiring a developer to develop it for you. You can hire a developer from any freelance site. Shufflehound recommends the developer https://www.upwork.com/freelancers/~011652ffec8865c6d5