Columns are fixed on the contacts list view page at this moment and it’s really hard to pull the custom field here as people may have fields with the different meta keys.
However, I’m taking your request on our feature request log. We may consider adding this in the future if we get similar requests a few more.
At this moment, you can change it yourself from the file: ‘……/wp-erp/modules/crm/views/contact.php’ . This is written in Vue.js though.