First of all you need a way to add the field to the user edit screen. Please notice that our plugin does not provide a solution for this. You can add products like Type or ACF to add extra fields for your post types.
The next step is to be sure at least 1 record is available with the new field populated. Then you can use our plugin to add a custom field column and select the desired field. Our free version does not support sorting. You could choose to buy our pro plugin that comes with sorting, filtering and inline edit support and more awesome features or you could write your own code to make the column sortable.
Here’s some documentation to make the columns sortable on your own (https://code.tutsplus.com/articles/quick-tip-make-your-custom-column-sortable–wp-25095)
Our you could use our pro plugin