I'm not sure if this can be achieved so I'm checking in with support. Here's what I'm trying to accomplish: I want to create a custom field category where I can go in and type in the menu item name and on the right choose a menu item from a dropdown. So basically I want to create my own menu system using Meta Box. Can this be accomplished?
With the extension MB Custom Post Type & Custom Taxonomy, you can create a custom taxonomy for your post type and add it to the menu as well. Please find it here https://wordpress.org/plugins/mb-custom-post-type/
If you want to add the custom field to the menu item, currently it is not possible with Meta Box.
Thanks for your response. I think I did not communicate what I'm trying to accomplish properly. WordPress has Pages, right? I want to create custom fields in Meta Box where I can retrieve those pages via drop down mechanism. So the left field can be "Custom Page Name (text Field)" and on the right, a dropdown with all the "Pages" in WordPress. Does this make sense?